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A lot of people posted questions about the iPhone 7 Home Button in the forum. They tried a lot of solutions, but the iPhone 7 Home Button still doesn't work. How to solve this problem, today , the  vip pro shop team  will share with you one. An effective solution to get your phone back to work! We got an iPhone 7 from the customer, the fault described that the home button has no return function. When press the home button do have no any reaction.  Go to Settings>Touch ID & Password,“Add a fingerprint turn out grayed. We judged that the iPhone 7 home button is completely damaged. Is it due to the faulty Home Button Fingerprint Flex Cable that the home button function won't work off? In order to fix the home button, we need to disassemble the iPhone with phone opening tool  . First of all, remove the display assembly and take out the logic board with QUICK 861DW Hot Air Rework Station, then remove the vibrator, speaker and charging port flexibl...

We received an iPhone X with failure, the customer described that the iPhone X fell into the water，the Apple rejects warranty, now the iPhone is in recovery mode, and it reports 4013 error when restore it. According to description of the customer, the iPhone fell into water, but not dropping, in this case, we can exclude the baseband problem. After received the iPhone X, first we restore iPhone by iTunes, the iTunes reports an unknown error 4013, and it’s as same as to the problem of the iPhone baseband. Quit the recovery mode, disassemble the iPhone, and connect it to DC power supply to check the iPhone current. The iPhone X can enter the IOS system when the iPhone screen isn't connected, and the iPhone can be turned on smoothly when the front receiver flex cable isn't connected.  Observe the iPhone display screen under the Stereo Zoom Microscope , we found the iPhone receiver has the trace of the water. Remove the front receiver sensor flex cable, we found the p...

The iPhone 6S receiver has no voice when it is in calling, we can't hear the voice from another side, we can hear from each other when we turn on speaker on iPhone.  According to our repair experience, the iPhone receiver no sound, but the iPhone speaker can hear the voice, this problem is usually caused by iPhone receiver, receiver flex cable, receiver circuit or iPhone audio IC problems. First we need to test the iPhone 6S. Power on iPhone 6S, go to Settings->Sounds & Haptics to test the ringtone, the ringtone voice tested is normal. Make a phone call to someone else, the receiver has no sound, but the speaker is normal.  Now, replace the receiver and flex cable, and then test the iPhone 6S, but the failure still exist. Use digital multimeter to measure the diode data of receiver signal 1 pin and 3 pin that on the connector J3100, the data measured are normal. Check iPhone schematic diagram via WUXINJI Dongle , we know that the 1 pin and 3 p...

Today, a customer brought his iPhone6S, hope we can help him, his iPhone 6S accidentally drop into water, and then the iPhone 6S won't turn on anymore, how to fix it? Here is the guide!  Disassemble the iPhone 6S by phone opening tools, connect iPhone motherboard to the DPS DC power supply, it leaks 120mA, after triggering, the current is stuck in 360mA.  Remove the iPhone motherboard, and observe it, we found the iPhone baseband power IC, NFC IC, iPhone big audio IC and iPhone display power IC all have traces of water. Clean up the iPhone motherboard with iPhone PCB cleaner, and then connect it to the DC power supply again to observe the current, now the current turns to 80mA, after triggering, the current is stuck in 300mA. At the same time, we found the iPhone display power IC was repaired before, and the corner of iPhone display power IC was damaged. Remove the iPhone display power IC, re-connect to DC power supply , the iPhone motherboard is no lon...

One customer said his iPhone 7 caught in iTunes Error 4013 and required to be fixed. Before repairing, press the power button to turn on iPhone, the phone stuck in iTunes recovery mode, can not access the system. Next, connect it to the computer and recover through iTunes, the error 4013 occurs during the recovery process. The phone boots again. Fault Analysis iTunes Error 4013 of iPhone 7 usually caused by pseudo soldering or damaged CPU. The error may be related to the power supply of the baseband PMU or NAND flash. Since CPU repair is very difficult, so we can check the power of the baseband PMU and NAND flash at first. Connect the iPhone to the DPS DC power supply   and measure the voltage of the baseband PMU C5623 and C5631. The result shows that the values of C5623 and C5631 are normal. So we judged that the power supply of the baseband PMU is normal too. Fault Repair Let's pay attention to the NAND flash power supply, remove the black adhesi...

Regarding the iPhone 6 Plus No Displa problem, many people have encountered this problem, we received an iPhone 6 Plus to repair, the faulty described is that this iPhone 6 Plus doesn't display, after replacing the iPhone display power IC, the problem is still exist, and they have no idea how to fix, so they send iPhone to us.  Disassemble the iPhone 6P by phone opening tools, carefully take out the iPhone motherboard.  Put iPhone motherboard under the Stereo Zoom Microscope and then use QUICK TS1200A hot air gun to re-weld the iPhone display power IC that has been replaced by co-worker, and then test it, but the iPhone screen is still not display.  Now use digital multimeter to measure the power output voltage -5.7V and 5.7V of the iPhone display IC, there is no output, which means the iPhone display power IC doesn't work properly. Open the WUXINJI Dongle to check U1501 working principle, we know that if the iPhone display power need works properl...

Have you ever felt panic when your phone battery is at 5%? especially you are outdoors, can't find any plug to charge it, nothing goes with you, you may feel frusrated at that moment. But today what we will talk is not only about the phone battery low power, but also the charging issues. Such as, no little lightning symbol appears next to the icon, no happy little electronic beep to signify charging. You are trying to do it, but no idea about it, then these tips may can help you fix your iPhone about this problems, here we will are happy to do that. Almost all of peopel will focus on the charging port, the charging port is where we connect the phone. This is often a lightning connector on newer iPhone models or micro-USB ports. As we known, we can use the lightning connector to charge the battery, with other devices like external monitors, laptops, speakers etc. So it is a great possibility to get damaged. It seems we have found the murderer, so we need to d...

An iPhone 6S doesn't boot after dropped, it has no response when we press the iPhone power button, we need to fix it. Carefully disassemble the iPhone 6S, remove the iPhone display assembly, disconnect the iPhone battery, and then take out the iPhone motherboard. Connect iPhone motherboard to DC power supply , there is no current. The iPhone motherboard doesn’t have an obvious short-circuit phenomenon.  Short connect boot pin, and then turn it on, the current tested is larger than normal, which means that a voltage in the boot circuit is short-circuited. Use digital multimeter to measure the diode data of main power supply for each circuit on the iPhone motherboard, we found the diode data of PP_CPU voltage is smaller than normal value.  Because there are many components are connected to the PP_CPU, so we are going to use rosin method to find out the short circuit part.   Put iPhone under the Stereo Zoom Microscope, apply rosin to the solder...

Iphone 7P can't be turned on, do you have a better solution? Many people have discussed this issue in the forum, but there is no complete solution. Fortunately, today,we will provide you with some solutions, please see the example below. Received an iPhone 7P from the customer, the fault described is that the phone can not be turned on. First, insert the iphone power cable to measure the charging current, the incoming current about  200 mA, still jump. Connect to the computer, it won't turn on.  Next, disassemble the machine and connect DC Power Supply , we find no current. There is no leakage on the front side, triggering a large current, which reaches 1.9A. Then, it’s easy to spray rosin to power on, current appeared. Picture 1 When we saw this, we all feel frustrated. Does the main power supply has failed? We decide to open the circuit diagram. And open the hot spot, we find there is the NAND flash power supply. Test whether there is a short circuit in t...

How to quickly solve the problem of iPhone 7 Plus Won't Charge and No Sound, you can check the solution below to get your phone back to work. Fault Description This iPhone 7 Plus accidentally fell into the ground, and then the iPhone camera won't take pictures, the iPhone handset has no sound, and the iPhone is not charging.  Repair Method After received the iPhone, it has many problems, but we need to fix it one by one, first we need to solve iPhone charge problem. Plug the iPhone lightning cable, we confirm the iPhone 7P is not charging. Connect iPhone 7P to the computer, the computer also can't identified the device. Now, we confirmed that iPhone 7P charge problem is caused by iPhone USB charge IC .  Remove the USB charge IC from the iPhone motherboard, use digital multimeter to measure the grounding resistance value of the solder point on the solder pad, we found the resistance value of the C3 is infinitely large, and this signal point is connected ...

Iphone X can't be charged, which is very annoying. After all, many people have great expectations for iPhone X. iPhone X is powerful and many people are attracted by its appearance, so your iPhone X can't be charged. The phenomenon is not to make you crazy, don't worry, the VIP store team will give you some good advice to get your phone back to work! A few days ago, I received an iPhone X faulty machine that Can not be charged,  Because of the tortuous repair process, so I wanted to share it with you. After getting the motherboard, considering the failure of charging, we first used the WUXINJI dongle to check the schematic on iPhone X, Insert the iphone tail plug flex cable and connect to J6400's 47, 48 pin, get 5V input voltage PP-VBUS1-E75, while the 20-pin HYDRA-CON-DETECT-CONN-L will be pulled down.Picture 1 U3300 output PP--VBUS1-E75-RVP and sent to U6300 via R3360 again. HYDRA-CON-DETECT-CONN-L changed the name to HYDRA-CON-DETECT-L via R6410....

The customer send us an iPhone X to repair, the fault described is that the iPhone is not turning on after dropping, and it reports error 56 after restoring.  The iPhone X is connected by 2 pieces motherboard via a middle column, so the pins are easy to lose because of dropping. Now, it's possibly the pin from the NFC chip to the iPhone CPU that was dropped off. Disassemble the iPhone X, take out the iPhone motherboard. Use QUICK 861DW hot air rework station to separate the iPhone X motherboard, and then we saw that there are some pin was dropped off. Pic 1 Check iPhone schematic diagram via WUXINJI Dongle , it's surrounded by ground lines, and the 6 useful pins was dropped off. The ground lines are no need to fill, we just need to fill these 6 useful pins, we can check it under the Stereo Zoom Microscope. These all are the signal line of the NFC chip, so when we restore iPhone by iTunes, it reports unknown error 56. Pic 2 Next we need to plant ...

An iPhone 7 user posted in the forum, his iPhone 7 Wifi could not be opened, how to solve this problem? fortunately, today, the VIP Pro Shop team has provided a solution to this failure. You can read the following article... We received an iphone 7 from the customer. He described that WIFI, Bluetooth can't be opened, and exist leakage. After testing, we find that Wiif could not be opened, but Bluetooth could be turned on, and the compass has also problems.  Set the backlight to the brightest，the screen is till dark. Acording to the past fix experience, we thought that the damage of general function module will lead to leakage and rapid power consumption. Since the Wifi function cannot be activated, it may be caused by the damage of iphone Wifi IC . Picture 1 First, disassemble the iphone,  use DC Power supply  to power on, indicates that the current is missing, trigger more than 100 jumps. Then open the motherboard with QUICK 861DW Hot Air Rework S...

We received an iPhone 8 from the customer. He said that his iphone suddenly couldn't be turned on. We connected the iphone 8 to the DC Power supply and found that the current is 250mA when the iphone 8 is powered on, then goes back to 0 and continues to cycle. Based on past repair experience, we judged that it is related to the USB charging part. The way to disassemble iphone 8 is similar to the 7th generation. Using the HYT 888D ESD digital desoldering station to disassemble the motherboard, we found that the counterparts have soldered the charging part, while the 8th generation U2 (6300) is still located at the bottom right of the NAND flash, which is not common with previous models.  Picture 1 Picture2 Remove the U2 with desoldering tool, and use Fluke digital multimeter  to measure the pad resistance, there is no any abnormality. when the machine powered-on, the current is also normal without U2. Replace the new iphone U2 chip and test machine,...

If you are using a high-end smartphone like an iPhone, you will hardly experience any issue like no sound during a call on iPhone. In case, you face such a problem, here are a few solutions you can try before you go to Apple Store. One of my customers sought me for help. This is a second repair machine, the customer described the problem is that his phone has no sound. When we turns on the ringtone option on the phone, it will be stuck. Turning on the recorder, recording item can be clicked, but no any sound can be recorded. Facing up to the case, the possibility of a small audio failure is greater. Romoving the iphone motherboard , we obeserved that  the large audio and the small audio have been replaced. As the case revealed, the culprit possibility of the chip itself is very small. Removing the small audio by iphone opening pry tool, and testing the small pad ground value of the pad, finding that the small audio F6 foot resistance is infinite (normally around 400)...

We received an iPhone 6 from our customer, the fault description is that the iPhone 6 won't turn on. Disassemble the iPhone to observe it, we found that the top right corner screw column of the iPhone CPU is missing, the iPhone motherboard has been dug and welded jumper wire. Pic 1 First connect iPhone motherboard to the DPS DC power supply to check the current condition, we found that the iPhone current was above 200mA, then dropped and stayed around 150mA. According to the iPhone boot current working process, we analyze that the iPhone isn't turned on when the current was above 200mA, this failure is usually caused by iPhone display and backlight circuit. Use digital multimeter to measure the grounding resistance value of the display and backlight circuit. Pic 2 The resistance value measured is normal, so we replace the iPhone display IC, but the problem still the same after replacement. Now, we need to replace the iPhone backlight IC, after replacement, w...