Why the iPhone slows down and how it can be accelerated

Find the reason, fix it in a couple of clicks and enjoy the fast work of the iPhone.

To understand that your iPhone has become slower is quite simple. They slow down the animation of the desktops, open applications and games for a long time, and on the whole the smartphone is slowing down. The reasons for this are also simple.

Why the it brakes and how to fix iPhone
1. You just installed a new version of iOS
Do not rush to scold your iPhone for sluggishness immediately after the update. The system needs some time to index all the files, delete the cache, and also optimize its work and applications. The smartphone will slow down a bit, heat up and discharge faster than usual – this is normal.

Actually, there’s nothing to correct. You just need to wait. Ideally updated in the evening and leave the iPhone on charge at night, so that iOS did all its business.

2. The disc is almost full
Filling the built-in drive to the limit can also be a reason for slowing down the iPhone. No matter how productive a smartphone is, the system will inevitably work more slowly if there are several free megabytes left on the disk.

Why the iPhone is slow: The disk is almost full What to do if the iPhone is slow: clean the storage

Eliminate this problem is simple. It’s enough to delete something unnecessary or to reset the photo and video to your computer or save it to the cloud. Starting from iOS 11, it’s easy to clear free space directly on the smartphone from the “iPhone Storage” menu, which is located in the “Basic” settings section.

3. You updated, but did not install iOS from scratch
Another reason for the brakes may be accumulated garbage and bugs from previous versions of iOS. This usually happens if you update the device several years in a row, rather than perform a clean installation.

To prevent this from happening, it’s best to rotate the update with a clean install and sometimes flush the iPhone through iTunes without restoring from a backup. It’s best to save the backup copy just in case. At least in iCloud.

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IPhone 4S screen replacement

Some iPhone owners are familiar with the unpleasant situation when an expensive device is poisoned by a careless movement of the hand in a free flight and after that an unsightly spiderweb of cracks remains on the screen. If you do not know where to fix iPhone 4, this article is for you!

Choose a new display

Some craftsmen advise simply to put a new display from the usual “four”. But this is hardly possible, since it has other contacts, not like on the 4S model. Therefore, it is better to purchase a display specifically for this iPhone.

When buying a new screen it is important to make sure that the spare parts do not differ from the original. Whether it is not enough what manufacturers from absolutely other firm have brought in standard mechanisms. By the way, if the owner of the damaged device does not have experience in disassembling the iPhone, it is recommended to purchase a special set of screwdrivers, two plastic grippers, a suction device and a small pair of tweezers to the replacement screen.

How to repair iphone screen: repair process

Contacts of the loop are neatly tucked away, and the screen is removed. Use one of the screwdrivers to unscrew the small clips from the bottom, near the speakers. Another screwdriver detaches the remaining parts.

When parsing the iPhone, it is better to use the instructions with photos that can be found on the Internet. With them, the whole process will be much easier and faster. Also there is no risk that after the assembly there will be “extra” details.

Every detail and bolt is better laid out on the leaves, which will be marked chronological order of disassembly in the form of cells. On average, the layman will take about three hours. In general, this is a simple matter, since the design is very well thought out and at some stage it will even seem that the Lego designer understands.

After disconnecting all the closest parts to the display, it is withdrawn. Now the main thing is not to forget to remove the button “Home” from the cracked part and put it in a new place. A serviceable screen is applied to the case and six side and four corner fastenings are fixed. It remains only to deliver the camera and the module for Wi-Fi. By the way, the grid on the speaker can not be worn, as when falling and damaging the glass, it will almost certainly be spoiled. In the device it does not play a special role and from the side it will not be much appreciable that on iPhone there is no grid on the dynamics. To buy it separately, unfortunately, is unlikely to work.

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After all the work, press the power button and wait for the device to start up normally. If everything went well, then you can enjoy a brand new screen on the iPhone.

Broken glass in the iPhone / iPad

iPhone – one of the most popular “apple” devices. It is attractive for its functionality, convenience, reliability and respectable design. For all its advantages, this device, unfortunately, can break. Most often the screen beats. But the case can suffer as well. Even a protective glass and a cover do not help.

Why does the glass break the iPhone?
There are a lot of reasons that cause the iPhone to break glass. But most often the following situations occur:

“Apple” device fell on the asphalt, curb, a ladder of stone, etc .;
On the screen inadvertently put a heavy object. From this he just burst;
The glass cracked due to a sharp temperature drop. This usually occurs in winter;
The iPhone hit the dog’s mouth;
The device was in the hands of children who began to throw it like a ball;

The smartphone is operated under extreme conditions.
Broken glass: what to do?
Do not panic, see on our website. Any malfunction can be eliminated. Broken glass is no exception. Just need to find an intelligent wizard. It will replace both the glass and the display. These two elements are assembled.
This breakage is not a warranty case, so it will not be possible to replace the damaged iPhone with a whole one. However, if you have a desire to get a new device, you should know that a good discount can be provided in the company’s service center.

Preparatory work before changing glass
Before the broken glass of the “apple” device is replaced with a new one, the following manipulations are performed:
1. The screen is removed. It removes the cable, acoustic speaker, frame, button “Home”.
2. The plastic frames are removed, by means of which the display and the body of the device are interlocked.
3. Remove the suspension.

Thinness of glass replacement for iPhone
The fragments are separated from the sensor part by a special device called a separator. The operating temperature is 80 degrees. Then the disassembled screen is connected to the phone and its operability is checked. If it works, then the dried sticker is removed from the display. For this, a special liquid and a scraper are used.
Further on the matrix is ​​applied ultraviolet adhesive. After it spreads a little, a new oleophobic glass is installed on the matrix. At the final stage, the frame is glued and the backlight is installed.

Whom should I entrust to replace the glass?
At first glance, it may seem that replacing the glass in the “apple” smartphone is not difficult. However, in fact, this process has some peculiarities. Each of our master knows them perfectly. Therefore, ask for help specifically to him. It will return your iPhone’s original functionality and luxurious appearance. He has all the required equipment, tools and spare parts for this.

The glass broke the iPad
The glass installed on the iPad is made using a special technology. It can withstand more than 200 million clicks. However, some users even break this glass.

Why can the glass break in the iPad?
In most cases, the glass in the iPad is broken as a result of the following reasons:
• The “Apple” device fell from a height, it was hit or subject to some other mechanical damage.
• The iPad was heavily deformed. For example, you put it in the back pocket of trousers, forgot about it and sat down on a chair. As a result of such actions, a large transverse crack usually appears.
• Careless handling of the machine. In some cases, the sensor works even when the screen is broken. However, this is extremely inconvenient and ugly.

What should I do if the glass is broken in the iPad?
If the glass on the iPad crashed, do not get discouraged. This is not the worst thing that could happen with your “apple” apparatus. A similar problem is solved. The main thing is to contact the master, who has all the necessary equipment, tools and original spare parts.

Stages of replacement of glass in iPad
The process of replacing broken glass on the iPad proceeds in several stages:
1. Carefully remove old damaged glass. For this special thermo equipment is used. It is important not to damage the plumes of peripheral components and the antenna of Wi-Fi.
2. The correctness of the device is checked. It is important to know how all buttons work, the camera, whether there is a sound, an image, etc.
3. The inside of the body is scrupulously cleaned. Remove the old glue and apply a new adhesive layer (around the perimeter of the iPad in places where it contacts the glass).
4. A new glass is put. Compressed air is used. It is thanks to him that it is possible to prevent dust from getting between the glass and the display. To ensure that the new glass adheres well to the body, heat treatment is carried out.

If the housing is damaged
If the case of the iPad is damaged (dents or chips in the places where the glass is attached), then before the glass is replaced, the device is completely disassembled and the metal body is straightened. If you do not perform this manipulation, then the new glass will not “stand” in the case.

Who knows how to properly change the broken glass in the iPad?
To replace the glass in the iPad, contact our service center.

DOES NOT WORK VIBRATION ON IPHONE

Quite often, iPhone owners of different models face the fact that the vibration on the phone stops working. Our masters literally in 15-20 minutes will repair the vibration. Since we provide a guarantee for all types of repair work, you can be sure of the further work of your phone.

WHY DOES THE VIBRATION WORK ON IPHONE?

Detailed answer here – http://electronicsrepair.site/

Most often, a vibration break occurs for the following reasons:

Very often the contacts of the vibration motor move away, which is the cause of the disruption of the work. This can happen after the phone is dropped, for example.
The phone may stop vibrating if the vibrator has burnt out. For example, water can enter the device. Entrust your iPhone to our specialists and in 20 minutes you will get a properly working phone.
Also the problem can be in the upper loop. Our masters will not be difficult to replace it. A replacement is also covered by the warranty.
In addition, one of the reasons for the failure may be incorrect firmware phone, because the software problems often lead to the appearance of glitches and bugs on the iPhone.
It’s also worth checking if you’ve disabled this feature in the settings.

IS IT POSSIBLE TO CORRECT THE PROBLEM?

Before trying to fix the device yourself, you need to know what risk you are taking. To successfully repair the phone, you need to have special equipment, which very often has a high price. In addition, you need to have experience working with the iPhone, otherwise you risk getting a more serious breakdown. It is best to trust professionals and contact our service center. If you have any questions, please contact us by phone and we will try to solve any problems related to your iPhone. Our operators will tell you which center is more convenient for you to contact, or pick up a master who will arrive at the right address and perform repairs in a short time.

Features of Apple’s iPhone repair

As for the electrical repair of the printed circuit board, the situation here is even more complicated. Microminiaturization technologies used in Apple make such repairs impossible without the use of special tools and a microscope. At the same time, most electrical components and chips are filled with a special epoxy resin (compound). This increases their reliability, but reduces maintainability.

iphone screen replacement

And if such a chip is still out of order, then its replacement is a painstaking work to remove the compound and restore the conclusions of the microcircuits. Considering that some microcircuits have from 25 to 300 pins, this work even in skillful hands takes more than one hour.

When working with the iPhone without using covers or protective films, scratches or scuffs inevitably appear on the display surface. Dropping their iPhone, every owner rightly worries about what might crack the screen. Of course, the cracked screen from the iPhone is now in fashion and even different covers and films with the image of similar effect are sold. However, the real cracked display of the iPhone is not always safe for an expensive sensor element, which is very closely associated with the display.

What should we do in the event of an incident?
If all the same, there was a nuisance and you need urgent repair of iPhone glass or replacement of the display, then in such a situation it is possible to do the self-replacement of the glass.

So, to replace the glass from the iPhone you need to perform the following difficult steps:

Unscrew the lower screws;
Slide the back cover up;
Unscrew the screw and detach the connector;
Carefully remove the battery (it is glued);
Extract the vibration element;

Unscrew the bolts and disconnect the cable;
Unscrew the screws and remove the frame;
Unplug the cable and remove the camera;
Disconnect all loops;
Make sure that the tray where the sim card is located is removed;
Unscrew the bolts and remove the motherboard;
Remove the speaker (aerial);

Extract the conversational speaker;
Remove the charging connector;
Unscrew all screws around the perimeter;
Gently pull up the display and remove the “HOME” button;
Carefully continue disconnecting the display.
All of these points need to go also in the reverse order, when you collect the iPhone. Thus, repairing a glass iPhone can not be a difficult task if you have special tools and patience available.

Where to turn?
But what to do with the fragile, defenseless girl who does not know anything about technology? For this purpose, there is one of the most highly qualified service centers of Electronics Repair in Cincinnati, which are engaged in the repair of telephones. The specialists of the service center are famous for their skill in all types of troubleshooting, including on the display of mobile devices. The Electronics Repair Center has been working in this direction for 10 years and during this time is characterized by quality repairs, guarantees and, of course, receives feedback from satisfied customers.

Repair at home or in a service center?
If you have problems with the sensor or display, then, without hesitation, repair the iPhone glass trust it to specialized masters. After all, at home, when you try to repair or change the glass from the iPhone, anything can happen, due to carelessness, for example, since the parts and trails of the mobile device are very fragile. And in the service center, the specialist always has at hand a necessary tool or part to fix the error or make a replacement.

After repair, the iPhone is always tested. A warranty is given for repairs.

Repair of cell phones

We are glad to welcome you on the site. This page is devoted to a very relevant topic – the repair of cell phones. On the website you will not find a description of repairing cellular phones at home. The reason for this is the complexity of the technological process of repairing cellular phones.

The nature of the failure often requires not only the availability of test, soldering equipment, but also the knowledge of the structure of the cell phone and the ability to make diagnostics.

Do not attempt to repair the phone yourself if you do not have the required qualifications and experience in repairing cell phones. Often, trying to eliminate the failure of the phone yourself, you run the risk of causing even greater harm to the device. Let’s give a simple example, which clearly shows what can be encountered in the “self-treatment” of the phone.

In our service center entered the iPhone after the impact (the average price of the device in the stores of the city is $ 500). The owner of the phone did screen replacement himself and changed the glass. The iphone did not turn on, although its owner claimed that after the impact the phone turned on and even showed the display with slight distortion.

Preliminary diagnosis showed:

the battery is completely discharged
in the phone consumption 30mA
the charge does not pass
the phone does not connect with the computer (does not pass Check)

Before opening the phone, it is necessary to conduct preliminary diagnostics, which will avoid further ill-considered actions. According to the diagnosis, you can immediately assume that the problem is in the charging loop. But that’s why the phone has a problem with consumption? You can answer this question only after external examination of the internal components of the phone and if it is necessary to open it.

When parsing the phone, I immediately encountered a problem – the inner sides of the bolts were torn off, the absence of the top pair of bolts. External examination showed:
– charging loop damaged
the connector on the board is damaged (torn tracks)
crack on the filter SIM (R388), hence the consumption in the phone
wrong sequence of phone assembly
the camera cable is torn (the camera works in two color palette)
Scanning on an oscilloscope: A working board other than the SIM responsible unit.
Checking the card on the tester: The track of the connector tracks has been made (the tracks are to be restored) and the buttons are blown on the display line (button 5 is not called).

Here is the sad result of the “self-treatment” of the phone without the necessary knowledge of the structure of the phone, without certain skills, without the use of special equipment. Repair Cellular  phones is first of all qualified personnel with knowledge of their business. In the company Electronics Repir Cincinnati, each master specializes only on a specific phone model. Cellular repair, without certain skills is not possible.

The results of diagnostics were presented to the owner of the phone, and with it the final cost of repairing the phone:
Replacing the display. The display was originally with the marriage, although it will not be possible to return it back since it was bought from the hands for $ 200.

Electronics Repair cincinnati

The total cost of repairing the phone was $ 400. At the same time, the owner of the device paid $ 200 for the display.
I think that this example clearly shows that the repair of cellular, you need to trust a professional in their field. Initially, it was possible to avoid unforeseen expenses. We have more than eight years successfully engaged in the repair of cell phones in Cincinnati.

What to do if the phone got water (juice, tea)

In recent years, we began to receive cell phones filled with liquid. What do I need to know if moisture gets into the phone (water, juice, coffee, tea, etc.)? Let’s analyze mobile phone repair the example of Nokia.

1. When you fill the phone with liquid – you need to remove the back cover of the phone as soon as possible and remove the battery. This will help to stop the corrosion of the printed circuit board under the influence of electrochemical reactions (the so-called electrolysis process). And do not try to re-insert the battery into the phone and turn it on, hoping that the phone is “already dry” and, of course, do not attempt to charge the mobile phone.

The first signs of getting into the phone Nokia: on the glass there are divorces, the glass lags behind the adjacent plane of the frame, on the display substrate you see the divorce, when you press the buttons you need to press harder (the buttons do not work), badly catches the network, on the elements of logic, behind the battery, darkening, the indicator has become one-time or red, the microphone stops working in the normal mode, the phone periodically “buggy”.

2. The next step is to prevent the spread of corrosion on the board – cleaning. Your actions for de-energizing and removing the battery pack may not be enough, since a battery is soldered inside the PCB of the phone, responsible for the time and date when the phone is de-energized. Cleaning is carried out in two stages: cleaning the lines, cleaning the board.

For successful cleaning, you will need a work table with a good hood, a can of compressed air, special spray cans with traces, a set of professional screwdrivers, a bristle brush with increased bristles, an industrial dryer for soldering protective screens, a soldering station.

Even if all the components are in your possession, my advice to you is, take your phone to Nokia service. It is not enough to have tools, since one wrong move when the protective screen is soldered off and your phone can not be restored.

3. Flushing the phone. We will need an ultrasonic bath with an operating frequency of 30 kHz and an amplitude modulation of up to 90%, a purifier (medical alcohol will do).
4. Drying – deep at a temperature of 150 C. It is not superfluous to recall that the high penetrating power of water is due to the small size of the molecule relative to the capillary of the printed circuit board. When drying, the heating energy must break the physico-mechanical bond between the water molecule and the capillary.

5. Carpeting in places where the corrosion process has most progressed. We use industrial hair dryer. The temperature is selected based on the service standards for lead-free soldering.

In the case of low-quality Nokia soldering without observing the temperature and process conditions, an irreversible process of delamination of the internal layers of the board takes place.

6.Diagnostics of the phone using an oscilloscope, GSM tester, multimeter and other measuring devices.

7. Repair if a malfunction occurs.

From the practice of Nokia repair, you can confidently say that if you have exactly repeated the first item and delivered your phone to the service center as quickly as possible, then in 90% of cases, the seventh expensive item can be avoided.

8. Treatment of the entire board to prevent further spread of corrosion in new cases of moisture ingress.
The processing of the board on Nokia occurs in three layers. In addition, the loops and connectors on the cables are processed.

The cheapening of the technological process can lead to malfunctions in the operation of the phone after repair. It is also recommended to change the battery in the phone (if the battery is swollen). Repair is a rather complicated process, accompanied by constant monitoring and compliance with service standards.

Problems with the screen. Replacing the display on your phone / tablet

A broken screen on the phone (or tablet) is the most popular problem with which customers turn to our service. And no wonder, because the material of the screen is glass. And it does not matter if it’s hot, or gorilla glass. As practice shows, everything is broken. Yes, and the phone, if it falls, then necessarily glass down.

The main problems with the screen on the phone
Cracked the top glass
The sensor does not work
Problems with the display matrix
No backlight
Why does the display module change?
How quickly can I replace the screen?

Look here

1. Cracked the top glass
At the same time, the crack on the top glass on the screen went, the touch screen continues to respond to touch, the image on the display without spots and broken pixels. The most common case. But it is not always possible to replace broken glass separately. More on this later in the article >> modular replacement.

2. The sensor does not work
Outwardly, no cracks can be seen, but the touch screen (it’s the touchscreen) does not work. In this case, a part of the screen may not react to pressing, the sensor can not operate at the point of touch or not work at all. There are a lot of reasons for this – the phone was dropped and the chip in the touchscreen glass was formed, the trail from the glass,

In 99% of cases, when the sensor does not work, the problem is solved ONLY by replacing it. Often you can hear the opinion that something may have departed or need to be corrected. No, that will not help. Just change the touchscreen.

3. Problems with the display matrix
The picture on the screen is, but it is visible only if you look at the light. The display is not fully lit (although the touch buttons can be highlighted when the power button is pressed). What can be:

After the fall: broken pixels, colored bars, dark spots, a white screen or a picture is barely visible, the image “ripples” or “meerhytit.” All this is the result of mechanical impact on the display matrix. Maybe the phone did not even fall, but was crushed in a jeans pocket or in a bag.
After the water. After moisture has entered the phone, stains or stains may appear on the display. To remove them, you need to repackage a complex system of light-scattering films inside the screen. This is not done on every phone.

4. No backlight
After entering the moisture inside the phone, the lighting circuits can be deflected. It’s bad if it’s the LEDs inside the screen. Not every display has the ability to reach them. In this case, you have to change the screen completely.
The coil burned in the backlight circuit or the voltage inverter chip. In this case, the problem is already with the motherboard and there is no relation to the display of the phone. Need a diagnosis to know exactly the cause of the problem.
no backlight

Why do I need to change the display module?
Even if only the top glass is cracked, and the sensor and display function normally. The fact is that the design of most modern displays is arranged so that the glass, touch panel and matrix are one part. Therefore, you have to completely replace the display module assembly. This affects the cost of parts, and hence the repair of the phone as a whole. Specify the wizard, whether you can change the touchscreen separately or you need to change the module, while indicating the exact model of the smartphone or tablet.

Demand creates supply, and in many workshops it is proposed to replace separately broken glass on the screen (or touchscreen). This can be done not on all models of phones, and not always cost-effective. Sometimes the replacement of glass will cost almost as much as the replacement of the module, especially in budget smartphones and the middle class. On expensive phones, where the screen module itself costs a lot of money (usually it’s Amoled type displays), it’s almost impossible to replace the glass separately because of the fragility of the display matrix. It all depends on the phone model. Fide out more on Google maps.

Screen replacement times

In the first place for us is quality. And on many phone models the screen is glued to a special glue-sealant, which dries about 10 hours. That is, if you make repairs qualitatively, you need at least a day, so that the screen is well adhered and with it there were no problems in the future. There are services where the display is glued to a double-sided adhesive tape. The problem is that in modern phones very narrow frames and scotch simply does not hold. As a result, the screen is peeled off, there are lights on the sides (especially visible in the dark).

Plus there is an elementary load of masters, time for checking and stuff. But once again, we are interested in changing the screen qualitatively and quickly at the same time. Terms as well as price are agreed individually, usually it is not more than 1-2 working days.

Diagnostics, Troubleshooting and Repair of Cell Phones

Hello, in this article we tell how to fix and diagnostics cell phone. Like any complex technique, cell phones often fail when used actively. This can happen for a variety of reasons, such as factory marriages, long service lives or the careless handling of the owner with the phone. The main reasons for the breakdown are frequent falls, water entering the phone, bathing the phone in water (fell into the river, got into the washing machine), non-observance of the rules of operation of a particular model or simple negligence, because many phone models are very fragile in circulation. For example, clamshell models are often broken by carelessness.

If the phone breaks down, the owner begins to look for a repair location for cell phones and comes to the service center to a repairman for help. And in this situation, the master must quickly and skillfully conduct a primary diagnosis of the cell phone and repair it if necessary.

In general, the diagnosis of malfunctions is a kind of art, based, first of all, on a deep understanding of the operating principles of the device. Without this, it is impossible to master the art of repair perfectly. Below we give a general approach to the repair procedure using the example of the Nokia 6020 phone, and training in our courses, as well as your patience, accuracy and attentiveness will allow you to gain experience and polish your skills.

Malfunctions of mobile phones can be conditionally divided into three types:
– mechanical damage;
– failure of electronic components;
– Incorrect operation of the phone software.

Mechanical damage
Mechanical damage is detected by visual inspection, including by means of optical instruments – a magnifying glass and a microscope. It should be noted that even small external damages that appear after the impact or fall of the phone, as a result, can lead to the formation of a microcrack in some contact track, which in turn leads to a total inoperability of the phone. Most often, the chips suffer from the chips of transmitters and antenna switches assembled on a ceramic base.

Failure of electronic components
Universal Test
The failure of electronic components, as a rule, is accompanied by a change in the current consumed by the phone. There are so-called rapid tests, which are based on the measurement of the current consumed. Some manufacturers, such as Nokia, in the technical manuals give algorithms for such tests. However, as a result of the test, we can only talk about the probability of failure of one or another element, although this probability can be quite high. For testing, it is necessary to take out the battery and connect an external power supply with a voltage of 4.2 V to the battery contacts of the phone, preferably it is a stabilized power source, with indication of the current output.

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The phone is switched off.
The current consumed by the switched off phone is 0. In the phones, two chips are directly connected to the battery – a power amplifier (transmitter) and a power controller. A faulty power controller consumes approximately 300 – 400 mA, and a faulty power amplifier may give a short-circuit (short circuit). That is, if the phone immediately consumes 300-400 mA when it connects to the power source (we do not press the power button at the same time), then the power controller is likely to be faulty and it needs to be replaced, in this model the power controller is called UEM. And if, when connected, the power supply stabilizes and stops feeding current to the phone, and the multimeter in the continuity mode shows a low resistance and “peeps”, it is possible to remove the power amplifier and check the phone for activation. If the phone is switched on, then we install a new power amplifier.

The initial current is 0.
Push the power button. If the current is still 0, then either the breaker, the closing circuit, or the power controller is faulty. You can check this chain by disassembling the phone.

Start disassembling the phone
Next, you should visually inspect the power button. Then you need to measure the voltage on it, if the voltage on it is (about 4 volts) and when you press it it drops to zero, then the switching circuit is working. In this case, the UEM power controller is likely to be defective or undamaged.

The UEM power controller can be soldered with a thermo-foam from a Lukey-702 soldering station. We will put on the microcircuit a little flux-free flux.

Let’s install the thermofan to a temperature of about 280 ° C. Carefully warm up the microcircuit. After warming up, it is necessary to clean the board with a spray-cleaning board, for example, FLUX-OFF

After that, the phone either turns on, or it can drive as follows.
If the current is approximately 50 mA when the button is pressed and disappears before the button is released, the program in the FLASH memory is faulty. In this case, the phone must be reprogrammed. To do this, we need a UFS programmer with HWK and an f-bus cable to connect the phone to the programmer.

Also we will need a firmware for this phone with the latest version.

We connect the programmer to the computer, install the latest drivers, the latest version of the program for this programmer, perform an update for it (if required). Open the program DCTxBB5, click on the button Connect, so we connect the program with the box (programmer). Next, choose the platform, in our case it’s DCT-4, and select the model you want.

Then click on the Check button to check the cable’s contact with the phone, and also send the loader to the processor. If the processor and flash memory are healthy, then we will see information about this in the program window, if an error is displayed instead of the information, then, probably, we need a replacement or restoration of the processor and / or flash memory mounting.

If the information about the processor and flash memory is displayed, then let’s try to flash the phone. We select in the corresponding windows the firmware files of the main program code (MCU), the language package (PPM), in our case with the Russian language (about the letter “K” at the end of the file name) and the content (CNT) (naturally, also with the Russian language). Versions of MCU, PPM and CNT must match.

Then click the FLASH button to start the firmware process.
If errors occurred during the firmware process, then hardware repair of the processor part and further flashing are necessary.
At the end of the firmware process, we try to turn on our phone. If the result is negative, then hardware repair and more subtle diagnostics are required.

Conclusion
In this article, we talked about the very first steps in the surface diagnostics and repair of telephones. For a deeper diagnosis, additional equipment, electrical circuits, the ability to read and understand them are required.

Battery replacement in iPhone

If the battery life in your iPhone is getting worse, or if it does not hold a charge at all, then you can easily replace the iPhone battery with your own. Before you start, remember that after you open the phone, it will no longer be covered by a warranty.

What will be required to replace the iPhone battery (visit our official website)

During the repair you will need:
– actually iPhone;
– crosshead screwdriver;
– A new battery for your device;
– One special screwdriver (so-called “star”);
– A sharp plastic tool that allows to ensure safe contact with the case of the communicator.

Next, we will discuss the items about replacing the iPhone battery.

1. Turn off the iPhone

Even before the beginning of the repair work to replace the iPhone battery, you must turn off your device.

2. Remove the rear cover

With the help of a screwdriver “star” it is necessary to unscrew the screws and set aside. They are exactly the same, so if you confuse them – it’s okay.

Next, you need to gently move the back cover of the device up with your thumb, slightly pressing it with your thumb. After that, it remains only to remove the back cover and set it aside.

3. Remove the battery and earthing clamp

Using a Phillips screwdriver, you need to unscrew a pair of screws that hold the battery in the casing. These are different cogs, so you need to remember where one of them was. The one that is bigger is the main cog.

Near the first screw you can see a small earthing clamp. You will need to use a sharpened tool to remove the clamp. If you do not do this, the clamp can fly away, after which it will be difficult to find. Using a thin sharp tool, gently lift the connector near the bottom of the battery.

Next, you need to remove the battery from the side of the case, where the volume buttons are located. It should be borne in mind that the battery is fixed with glue. And it can sit tight in the case, so you need to be careful, do not press hard on the edges of the case, and do not bend the battery. If one side remains stationary, it is necessary to try to pick it up in other places, while try not to go too close to the keys or to the power connector.

After you get the old battery, you can move on to installing a new one.

4. Replace the battery and install a grounding clamp

You should pay attention to the way the wires are bent, which is located near the battery connector. If in a new battery it has a different shape or is bent differently, then it is necessary to make it identical to the one that is installed in the old battery. Next, you need to install the grounding clamp you removed earlier.

Then you need to install a new battery in the case, then you need to press it down with moderate force to make sure that it is stuck. After that, you need to twist a couple of screws holding the battery with a Phillips screwdriver. It is absolutely necessary to make sure that the earthing clamp remains in the correct position. It is likely that during the tightening of the top screw you need to hold the clamp so that it does not come off. Then it remains to tighten the main screw.

5. Install the rear cover

To install the back cover when replacing the iPhone battery, you need to attach it so that the hinges can engage with the body and slide it down. The lid should be exactly in place. After the back cover has precisely become in place and is on the same level with the actual body, it remains to screw the two screws on each side with a screwdriver in the form of an asterisk.

Once the iPhone battery is replaced and the device is fully assembled, it can be turned on. If the phone does not activate, you should try to connect it to the charger and see if the battery indication is visible. It’s possible that your new battery is simply dead.