iPhone 4 - far from a new version Apple smartphones, so a thorough diagnosis will not hurt him even if he still works without a hitch, without a hitch. Do you want to incur any financial costs for unscheduled repairs? Well, if you understand at least something in technology, then nothing is impossible.

What you need to know about running a full iPhone diagnostics? First of all, you should understand what to check each system mobile device will have to be practically under the microscope and certainly separately. The list of necessary checks includes diagnostics: wireless network, Bluetooth and mobile internet; a touchscreen and a fully screen module (if you know that it is out of order or may be unstable, then you can buy a new screen for iPhone 4); upper and lower speaker; audio codec; upper and lower microphone; battery and connectors for charging, synchronization and headset ports; all physical buttons; checking the moisture sensor (if it is found that this sensor has changed color, you will have to dig deeper).

By the way, during the diagnostics of the operation and the external state of the iPhone 4 nodes, it will not be superfluous to clean the inner space of the case - if, of course, you consider yourself competent in this matter - and outline preventive measures that you can take on your own or with the help of masters from a proven service Apple technology repair center. It is worth emphasizing once again the phrase "it is for the repair of Apple equipment", since repairs in any other artisanal service will be carried out at about the same level as repairs at home. Only a little faster as there is experience in disassembly and assembly.

How to check the battery performance?

No special tweaks are required here. Charge your iPhone 100% in the evening and leave it overnight. If by the morning the charge has changed by no more than a couple of percent, everything is in order, but if the charge level has dropped by more than 10%, then the problem is obvious. Of course, it is possible that it is not the battery itself that is out of order, but the power management chip, charging port, charger, or there are failures in software... But, if we are talking about the iPhone 4, which still has its own battery installed, or it was replaced more than two years ago, then we can give 99.9% that it is in it and the iPhone needs a new iРhone 4 battery, which has no problems can be ordered at https://gmart.com.ua/parts/originalnyy-akkumulyator-iphone-4.html. Eliminating this problem, although costly, is not too difficult.

How to check the connection with the operator's network, Mobile Internet and wifi connection?

To begin with, it will not be superfluous to make sure that the SIM card is inserted into the tray correctly and that it is there at all. If there is no network, you need to check the correctness of the time parameters and restart the phone. After reboot, no coverage issue goes away? Check your SIM card on another phone. Perhaps the problem is with her, and not with the iPhone.

There are two scenarios: 1) the SIM card did not work on another phone either - you need to buy a new card, and then continue diagnosing your device; 2) the SIM card is in working order - it is worth checking the integrity and condition of the contacts of the SIM card holder and the correct operation of the GSM module. In most cases, ordinary users contact the service for a solution to this problem.

In the event that everything went well with the definition of the network, you can start checking the wireless and mobile Internet. Most likely, this procedure does not require a description, since all iPhone owners are daily Internet users and know that it is impossible to simultaneously check the operation of Wi-Fi and mobile Internet.

If Wi-Fi does not work, and you are sure that the access point is working, then contact the service or determine for yourself what exactly has become unusable - a Wi-Fi antenna or a loop. But in order to check the mobile Internet, you will have to do much more: turn off the wireless Internet - turn on the mobile Internet - open a web browser - launch any Internet page. There are two reasons why the site may not load - incorrect settings have been made to the smartphone or the service has been disabled by the operator. Both of these troubles are resolved through his own support service.

How to check the display module in iPhone?

There is a finger diagnostic method for the display module. Touch anywhere on the main iPhone screen 4, swipe, without looking up, across the entire screen and return to the starting point. If the image on the screen has returned to its original position, everything is fine. If not, it means that some area of ​​the touchscreen has stopped responding to touch and it's time to change the sensor.

Broken pixels, spots and other artifacts can also be identified visually by expanding a completely black image on the whole screen, and then immediately completely white. If you did not see any extra dots and spots, then the display is in full working order and the module does not need to be completely replaced. But this conclusion can be made only after an external assessment of the state of the screen. If it's too frayed and chipped, it might be time to replace it.

How to check sound, cameras and flash in iPhone 4?

Usually this parameter does not need a separate diagnostics. If there are problems with the sound even in the lower one, even in the upper microphone and the speaker, you will know about them long before you undertake a full check and sanitation of the device. The same goes for the state of the main and front cameras. And their more detailed diagnostics is available only in the service.

Why do we need a complete iPhone check 4 and is it worth spending money on repairing it at all? Self-diagnosis may be needed if you want to assess the scope of the upcoming repair and make the final decision for yourself whether to change the device or not. You already firmly decided that you do not want to part with your beloved iPhone, then you should not waste time, especially if you are not going to replace parts at home, since diagnostics are often included in the cost of repairs.

Sometimes it is difficult for iPhone owners to determine the malfunction on their own, especially if the problem is not visually identified. It so often happens that the external microphone does not work. Owners of phones do not pay attention to its malfunction for several months, as they hardly use it. When diagnosing, specialists check even those iPhone functions, iPad, which are not known to the average user.

What should be checked when diagnosing iPhone, iPad?

In order to conduct a high-quality diagnosis, you need to keep the following list in front of you and follow it from start to finish, so as not to miss anything.

- Checking physical buttons and vibration buttons in the iPhone. This includes the Home button (it should work 10 times out of 10 clicks), Power, volume control and silent mode. All buttons should work with the reaction of the phone and a characteristic click. When you turn on the silent mode, a vibration signal should be triggered.

- iPhone network check. With the SIM inserted, it is enough to make a call. With this call, you can immediately check the following two points.

- Check iPhone microphones and speakers and headset. This is easy to do when you call. It is enough to have two phones with you. You need to call from one to the other, bring them to the left and right ears and count to 10, pauses between words. All numbers should sound clear on both phones. This way you can check the internal microphone and speaker. For check external microphone and the speaker needs to be turned on speakerphone and repeat the check. Also at this point you can check the headphones, three buttons and a microphone on the headset.

-Check iPhone proximity sensor. When making a call, cover the top of the screen with your hand. This is a command to the phone to turn off the display and the touchscreen so that the speaker does not turn on with the cheek during a conversation.

- Wi-Fi If the iPhone shows 1-2 divisions 10 steps from the router, the indicator Wi-Fi networks- this means that the Wi-Fi module and antenna are working properly.

- Checking the camera and flash. To check, you need to photograph a dark plane with a flash. In photographs, the flash should propagate strictly from the center of the photograph and not lighten any one corner. When shooting close (3-4 cm), the camera should focus on its own. Don't forget about front camera... In the resulting photographs, you need to see if there are any dark spots or streaks.

- iPhone display (screen) check In order to make sure that the screen is of high quality and well installed, it is enough with the screen on (preferably with a dark background at full brightness) to press on the glass next to the speaker and next to home button... No need to push hard, enough easy pressing... If spots appear on the screen when pressed, this means that the screen is either not of high quality or poorly installed. Also, the display should not have dead pixels (bright colored dots that are clearly visible when the iPhone is turned on or off)

- iPhone Charge / Sync Connector Check Judging by the name of the connector, its task is to charge and connect the iPhone to iTunes. If, when connected to USB computer reacted with a characteristic sound, and the phone was charged at least 1% - the test can be considered successful. V iPhone models up to 4S inclusive, this connector also transmits analog sound signal... This means that it should stream music when connected to a docking station with speakers. You also need to visually check the connector for debris and dust inside.

How to make full diagnostics of iPhone, iPad and Mac?

If you buy a phone "hand-held", it would be best for you to make an appointment with the seller in our service center and ask our specialists to check it. When checking, our specialists, in addition to basic diagnostics, will also check moisture sensors and the presence of traces of soldering on the motherboard of iPhone, iPad, Mac. These are very important factors that affect the condition and value of the device.
Also, during diagnostics, our specialists clean the phone, including such hard-to-reach places as the speaker, connectors, microphones, etc.

This manual is also intended for iPhone Xs and Xr

IPhone Diagnostics is a mandatory component of almost every Apple phone repair. If the gadget accidentally slips out of his hands onto the asphalt or falls into the water, the owner afterwards may not notice all the irregularities in the work. If iPhone diagnostics are ignored, then they will make themselves felt later. As a result, failures not detected in time will lead to the need for expensive repairs.

Do not forget that a malfunction can have different causes. And only professional intervention will help to find out the true ones. A timely noticed malfunction and prompt repair will save you from major problems in work and will help to increase the life of the phone for a long time. Consider when iPhone diagnostics are required and how it is performed.

Why do I need iPhone diagnostics?

When submitting an application to the service center, tell us about what happened to the gadget: it could have suffered from a fall, a strong blow, getting liquid on it, or downloading unknown applications. Typical user complaints are as follows:

• The iPhone won't turn on. This may indicate both a malfunction of the Power button, and more serious malfunctions. It is difficult for a layman to determine the true cause, therefore, in order to save money and time, the gadget should be immediately entrusted to specialists.
• The phone won't charge. The reason may be a defective charger, and a malfunction of the microcontroller, and a damaged battery. An experienced craftsman will save money by correctly identifying the cause of the problem. Often, an appeal to non-professionals turns into the fact that the owner is persuaded to change the battery, although in fact the connector has just oxidized.
• The touchscreen does not work at all or slows down. The reason for this may be even a small crack after a fall or moisture ingress, as well as software failures and damage to the loop. Diagnostics of iPhone 5 and other models allows you to understand if a replacement is needed touch pad or it can be repaired.
• The device does not catch the network or does not keep the connection. This may indicate damage to the antenna module or software malfunctions. After the work of the wizard, the true reason will become clear.

In all cases, the malfunction requires professional analysis. It is highly not recommended to disassemble the iPhone 5s on your own - this will lead to more serious damage. Very often, in addition to the main malfunction, specialists have to replace torn cables or a broken case due to independent attempts to disassemble.

How is iPhone diagnosed?

After submitting the application, the technician will arrive at your office or home with all the tools for checking the phone and repairing. Diagnostics of iPhone 4 and later models is carried out in two stages:

• Checking the performance of all buttons of the gadget, as well as the connector charger... The operation of the touchscreen, volume control and other functions is also checked. At this stage, you can identify the main problems and determine what exactly needs to be replaced.
• Detailed analysis, which is carried out after the disassembly of the device. Each element is tested with special devices motherboard, the operability of all microcircuits and the power circuit is checked. This is a complex process that can only be performed by a specialist with extensive experience. Diagnostics of the iPhone 5 S and early models will allow you to see even the slightest irregularities.

Remember that timely identification of minor faults often saves you from major repairs and high costs. Diagnostics of the iPhone 4S and other models can be carried out on its own, if the owner simply wants to find out if everything is in order with his phone. Based on the results, he will be able to decide whether repairs are needed or while it is possible to do without it.

Who can you entrust iPhone repair and diagnostics to?

IPhone diagnostics in our service center is a guarantee of finding even the smallest faults. This is a necessary operation before any repair. You can get more detailed information on the prices for the elimination of various problems by calling our consultants. We will be happy to answer any questions regarding Apple gadget repair. Our specialists are able to carry out repairs of any complexity right at your home or office. Do not delay the repair, but contact right now!

Fair, not overpriced or understated. There should be prices on the Service website. Necessarily! without "asterisks", it is clear and detailed, where it is technically possible - the most accurate, final.

With the availability of spare parts, up to 85% of complex repairs can be completed in 1-2 days. Modular repairs take much less time. The website lists the approximate duration of any repairs.

Warranty and liability

Any repairs must be guaranteed. Everything is described on the website and in the documents. The guarantee is self-confidence and respect for you. A 3-6 month warranty is good and sufficient. It is needed to check quality and hidden defects that cannot be detected immediately. You see honest and realistic terms (not 3 years), you can be sure that they will help you.

Half of the success in Apple repair is the quality and reliability of spare parts, so a good service works with suppliers directly, there are always several reliable channels and your own warehouse with proven spare parts of current models so that you do not have to waste extra time.

Free diagnostics

This is very important and has already become a good form for the service center. Diagnostics is the most difficult and important part of the repair, but you shouldn't pay a dime for it, even if you don't repair the device as a result.

Repair in service and delivery

Good service appreciates your time, therefore, offers free shipping. And for the same reason, repairs are carried out only in the workshop of the service center: correctly and according to technology, it can only be done at a prepared place.

Convenient schedule

If the Service works for you, and not for itself, then it is always open! absolutely. The schedule should be convenient so that you can be in time before and after work. Good service works both on weekends and on holidays. We are waiting for you and working on your devices every day: 9:00 - 21:00

The reputation of professionals consists of several points

Age and experience of the company

Reliable and experienced service has been known for a long time.
If a company has been on the market for many years, and it has managed to establish itself as an expert, people turn to it, write about it, recommend it. We know what we are talking about, since 98% of incoming devices in the SC are being restored.
We are trusted and transferred by other service centers for difficult cases.

How many masters in directions

If several engineers are always waiting for you for each type of equipment, you can be sure:
1. there will be no queue (or it will be minimal) - your device will be taken over immediately.
2. You are handing over your Macbook to a Mac repair expert. He knows all the secrets of these devices

Technical literacy

If you ask a question, a specialist must answer it as accurately as possible.
So that you have an idea of ​​what exactly you need.
They will try to solve the problem. In most cases, the description tells you what happened and how to fix the problem.

Information that can be useful in self-diagnosis and troubleshooting

IPhone 5S Diagnostics

At the end of 2017, the most frequent iPhone to be repaired is Apple iPhone 5S... It displaces the fours and the usual five from the market, as its performance is still enough to "pull" the latest iOS, it is small (compared to 6, 7) and very easy to maintain.

Phone diagnostics

In this article, we will not talk about the simple reasons for the breakdown - broken screens, old swollen batteries and stuck buttons, the purpose of this article is to shed some light on the diagnosis of the iP5S motherboard. All instructions provided below are designed for wizards and services who are just starting to understand component repair of motherboards. If you are not in the business of phone repair, then this article is not for you, you need. If you have a client phone in front of you, and this is your first iPhone, on which you decided to try yourself as an advanced repairman, then put it aside, go to Avito and buy a phone for experiments. The SYSTEM-SERVICE company is not responsible for your actions after reading this article.

What you need to have before you start

1. Fine Sharp Probe Multimeter (well proven by Mastech)
2. A set of screwdrivers (pentalob, small cross, large cross for "double-deck" bolts that secure the board) (a set of screwdrivers for ali)
3. Several tweezers of different calibers (a set of tweezers for Ali)
4. Soldering station with a hairdryer (as well as flux and solder in the coil), the cheapest option is the YaXun 878D.
5. Laboratory power supply min. 0-5V 1A (any power supply unit within one thousand five hundred rubles in your supply store)
6. Understanding of basic circuitry (step-up, step-down converters, properties of basic elements of electronics, basic laws of electrical engineering)

So, before you is a brick that shows no signs of life

We remove the largest shield from the back of the phone board using a hair dryer, try to remove it quickly and not overheat the microcircuits under it. Be sure to remove all black protective stickers from shields and around connectors (touch, display, battery, etc.) before heating with a hairdryer otherwise they will melt and when you need to remove them you will rip the small capacitors and resistors off the board.

The shield was removed, find U7(further in the article, the generally accepted names of microcircuits will be used, if you do not have the slightest idea what U7 is, then look at the circuit), under U7 (on the side opposite to the TOSHIBA memory chip) there are 8 capacitors, ring them, then go in a row 7 inductors, and under them a row of capacitors - power filters for the processor, SoC and GPU. All of these system components reside in a single A7 chip and are powered by U7. Orient the board so that the row of the aforementioned capacitors is closer to you, and the TOSHIBA memory chip is on the opposite side. Call capacitors with diode or regular dialing. There should be no ringing, ringing means a short circuit on one of the power lines. If at this stage you suspect that you have found a short circuit, determine which power line it is - SoC, GPU or CPU. Using the circuit, find the capacitors sitting on this rail. If the phone is after water, then, for sure, some containers are closed. Remove the most "suspicious" capacitors with a hair dryer if the phone is drowned. If the phone stops turning on by itself and there are no traces of water, then only luck and experience will help you to determine the failed capacitor.

If there were no problems with the strapping of the power supply circuits of the A7 chip, look for a short circuit elsewhere.

All capacitors were removed, but the short circuit remained

Drowned people may have a short circuit inside the BGA matrix under the chip. First, place the flux on the side of the chip and blow it under the chip. Now your task will be to warm up the space under the chip so that the flux corrodes and removes possible corrosion. Do not heat the chip to its melting point or wait for it to float. Heat to the temperature of burn-out or vaporization of the flux. After the board has cooled down, wash off the remaining flux, check the result. Did not help? Remove the chip if you have not done this before, good advice: do not spare the temperature, set the hair dryer to 400-450 and the minimum air flow, warm the target chip and "push" it with tweezers to feel the moment when it floats on the solder. Remove with tweezers or vacuum stripper. Then either reball (not recommended) or put a new one. In any case, clean the pads well with braid and change the flux several times. There should be no problems with the installation of the microcircuit, it will also "float".

There is no closure, but there is no start either.

Hook up the battery and the bottom cable, start the board by connecting the charging cable, measure the voltage at the power supply of the SoC, CPU, GPU. Without a connected display, there should be no power to the GPU, the power supply to the CPU and SoC is in the region of 1 volt. If there is no short circuit, and there is no one of these supplies, consider replacing U7. All voltages are present, the board heats up a little, boots, but there is no picture? Measure the voltage across the backlight capacitor (in the diagram S131), if it is not there, then you either missed the short circuit, or the diode or backlight driver is out of order. They are under replacement. Changing the backlight driver is rather unpleasant, there is a memory chip nearby, which does not need to be overheated. Put a weighty coin on it or wrap it with thermal tape + foil so that the air of a hot hair dryer gets on it as little as possible. The capacitor and backlight driver are common culprits for the lack of a picture on the 5S. There is a high voltage (20V) and when water gets in, this place burns out first.

Turned on, but not charging

On 5S, the TRISTAR chip is to blame for this. Change it. Of course, the article assumes that you have already tried to change the battery and the lower cable.

In addition to the tristar, the Q2 transistor (a four-legged microcircuit) can create problems with charging, it can be replaced, in some cases a jumper is thrown there.