Your Guide to Local iPhone Repair Services

The iPhone 8 vibration function is not working, we try to fix it by restarting, updating and restoring, but all not working. Is there a problem with the iPhone motherboard?  We need to disassemble the iPhone 8 to check.  After disassembled the iPhone 8, first replace the new vibrator, it's really a motherboard problem. We need to replace the new vibrator. Find a iPhone junk motherboard , take out an vibrator, and then install it to the iPhone 8.  After replacement, power on iPhone 8 to test it, the iPhone mute button, it has response.   Go to Settings to check,  enter the test interface, the vibration function of the first few tests is normal, and the next thing is that there is no vibration function. What's going on?  Is the IC burned? We need to remove the IC and then test it.  Use QUICK 861DW hot air rework station to remove the iPhone vibrator IC, and then check iPhone schematic diagram via ZXW Dongle . Use digi...

As we know, the light sensor and vibrator is very important for iPhone screen. If you want to replace the iPhone screen, you also need to transfer the original screen data to the new iPhone screen(iPhone 8 to iPhone Xs Max),so you can make sure the new iPhone screen will work fine. Here is a  JC V1 programmer  to fix iPhone light sensor and vibrator problem (for iPhone 7- iPhone Xs Max), it also can repair iPhone baseband eeprom IC or iPhone logic eeprom IC problem. The JC V1 Programmer comes with 24-inch HD display screen, three-color LED indicator light, two small connecting seats (for connecting function panel) , two buttons and one function panel (including light sensor/touch connector, baseband function connector, vibration connector) It support 2 languages (Chinese/English) and three lines of code (read/write/burn/save), the function panel can be changed, the software can automatically update What’s the functions? - Repair iPhone Light sensor/ true ...

Recently, we found a problem on an iPhone 6, the iPhone speaker doesn't work. When we answer the calls or playing the music/video, the iPhone 6 is no sound from the speaker.  How to fix iPhone 6 speaker problem?  Please keep reading.  Because the iPhone earpiece works fine, so we think it's not the problem of the iPhone audio IC . Based on our experience, we suspected it's the problem of the iPhone speaker and iPhone  audio power amplifier circuit.  Firstly, we need to disassemble the iPhone.   After the demolition， use digital multimeter to measure the  resistance values of 1# and 2# on the flexible cable   connector of the charging port, the value tested is normal, which means the speaker buzzer is normal.  Continue to measure the resistance between 1#J1817 and ground, 2# with digital multimeter , the value of current is normal, which indicates the circuit from the charging port connector to the U1601 is also normal. ...

After pressing the iPhone power button, the iPhone 6S doesn't respond to boot, the iPhone screen keeps black.  Before the iPhone 6S got this problem, it works fine, after we charge it, the problem arises.  After plugging the iPhone lightning cable to charge it, the iPhone  charging icon appears abnormally, after few seconds, the iPhone turns black.  How to fix this problem?  Based on our repair experience, we suspected that it's the problem of the iPhone charge part. Open the WUXINJI Dongle to check iPhone 6S schematic diagram, we know that there are    three components are  directly related to the charge part, they were  Q2300, U2300 and U4500. Now we start to repair. Disassemble the iPhone 6S, take out the iPhone motherboard. Measure the iPhone motherboard with DPS DC power supply , the boot current jumps from 200mA, it's abnormal, because the normal current should be around 40mA, it's short-circuited. This  p...

Why my iPhone 6 Plus restarts infinitely? When press the iPhone power button, the white Apple logo appears normally, but then it turns off, the iPhone 6 Plus always restarts when the white Apple logo appears.  We tried several software solutions, but all is not working. Now we will try hardware solution to fix this problem. As we know,  the iPhone CPU,   iPhone Nand flash , iPhone logic eerpom IC, iPhone baseband all will cause the iPhone restart failure. So, we need to check them step-by-step.  Firstly, check the working condition for these chips. Measuring the grounding resistance value and power supply for the iPhone CPU, both measured value are normal. Next measuring the working condition of the iPhone Nand flash, it's also normal. When measured the iPhone eeprom IC, we found the bus (AP_TO_EEPROM_I2C) connected to the iPhone logic eeprom IC and the iPhone CPU  has some problem, the grounding resistance value for one of clock bus is mo...

This iPhone 6S fell into the ground, and then the iPhone won't turn on anymore. For the drop-damaged iPhone, mostly the iPhone boot failure is caused by hardware problem, so now we are going to DIY fix it in hardware aspect.  Use phone opening tools to disassemble the iPhone 6S, remove the iPhone display assembly, 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 ...

You have an single-SIM version iPhone Xs Max , but you want Dual-SIM version, is there any way can change Single-SIM to Dual SIM version on iPhone Xs Max?  Yes, here is a way that will show you how to DIY change it in hardware aspect. Firstly,  let's go to Settings->General->About to check the single-SIM version interface,the foreign single-SIM version of the iPhone Xs Max can only install one physical SIM card, the another SIM card can write numbers in a "burn" way to achieve normal communication, so we will see "physical SIM card" and "Digital SIM card" in the iPhone Xs Max "about" interface. Next let's check iPhone Xs Max single-SIM version motherboard under the Trinocular Integrated Microscope , compared with the dual-SIM version iPhone Xs Max, the R26_SIM, R27_SIM, R29_SIM and R30_SIM are not the core resistors. When we change the single-SIM to dual-SIM, firstly we need to use QUICK 861DW hot air rework station and Tit...

A water-damaged iPhone X got an unknown error 4013 when we restoring it, and then the iPhone X stuck in recovery mode. After tried some software solutions, the problem still the same, so, now we suspected the iPhone X has hardware problem.   Disassemble the iPhone X by phone opening tools, and then measure it with DC power supply , 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. Now, let's check the iPhone screen. Put iPhone 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 photosensitive lens also has the traces of corrosion. Use QUICK 861DW  rework station to separate the light sensor, the solder pad has been corroded. Handling the corroded solder pad, apply the tin, and use green UV oil  to cover the area...

The iPhone 7 Plus doesn't boot because of short-circuit, what's going on? How to fix this trouble? Here is the troubleshooting guide! Trouble phenomenon We press the iPhone power button as usual to turn it on, but the iPhone has no response, the iPhone screen always keeps black. First we through it's the problem of the iPhone screen, so we try to use another cell phone to call this iPhone, but we found this iPhone 7 Plus doesn't boot. Troubleshoot Use phone opening tools to disassemble the iPhone 7 Plus, after open the iPhone display assembly, measure the iPhone 7P with DC power supply ,  there is no current, which means there is no leakage phenomenon. Trigger it, and it shows large current, the current ups to 1.9A. Take out the iPhone motherboard, use rosin method, so we can find out the problem easily. We can check it under the microscope. Is it the iPhone main power problem? Check iPhone bitmap via WUXINJI Dongle, and then we found that the iPhone Nand ...

Here is an iPhone 6S that was damaged by water, now the iPhone 6S doesn't boot,  it leaks 120mA after connecting to the DC power supply ,  when trigger it, the current is stuck in 360mA. Here is a solution to fix it.  Take out the iPhone motherboard,  put it under the microscope to observe, finding that the iPhone baseband power IC, NFC IC, iPhone big audio IC and iPhone display power IC all have traces of water.  Attach iPhone motherboard to the PCB holder fixture , and then use PCB cleaner to clean the iPhone motherboard. Connect iPhone motherboard to the DC power supply again to observe the current, now the    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 longer leaking. Trig...

Last week, we received an iPhone 7 need to repair, the problem is that the iPhone 7 WIFI icon won't turn on. After testing, we found the iPhone WIFI and compass are not working. We need to solve it.  Disassemble the iPhone 7, measure the iPhone motherboard by DC power supply , the current is more than 100mA, it's abnormal.  Because the iPhone WIFI function is not working, so we need to check iPhone WIFI first. Remove the iPhone motherboard, and then observe it with microscope, we found the there is corrosion area next the iPhone WIFI IC.  Clean up the iPhone WIFI IC , and then remove the filter capacitor, the current tested is still more than 100mA. Keep checking, we found there is a small capacitor under the compass,and  a pin is missing. Measure it with digital multimeter , the data is abnormal.  Remove the capacitor directly, measure is again, now the data tested is normal. Assemble the iPhone, enter the IOS, the iPhone WIFI ...

A customer sent us an iPhone 7 Plus to repair, the problem is that this iPhone 7P handset no sound, iPhone won't charge and iPhone camera won't take photos.  Why is that? The iPhone 7P was damaged from the dropped, so we suspect the iPhone motherboard is damaged. Now, we need to fix it.  First, we need to fix the 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 iPhone 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 to the main audio IC via resistor R3104. There are 3 kinds of possibilities for this case: first one is the resistor...

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. 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. Next we need to plant the tin in...

We are trying to connect WIFI network with iPhone 6, but failed, because the iPhone WIFI icon won't open, it just displays grayed.  Is it the iPhone WIFI IC problem?  Anyway, here is the repair guide for this iPhone 6 WIFI problem. Use screwdriver to remove the screws that next to the iPhone lightning port, and then put iPhone on the CPB screen separator , so we can open the iPhone display screen easily. After open the iPhone, carefully take out the iPhone motherboard. For this problem, first we can replace the iPhone WIFI IC   directly. After install the iPhone WIFI IC, turn on iPhone 6, but it stuck when it entering the Settings, so the problem isn't been solved. Next remove the iPhone WIFI IC and test several key point signals, we found the 14 pin doesn't has the resistance value. Now, we need to check iPhone CPU . There is no Bus reset signal, the normal is 1.8V, we are going to borrow it from another place, and there is a 1.8V beside it.  It's us...

" My iPhone 6S Plus has boot failure, after it boots normally, the iPhone LCD screen displays abnormal, the iPhone LCD is half black and half bright, what should i do?" An iPhone user said it.   Disassemble the iPhone by phone opening tools, measure the boot current of the iPhone by DPS DC power supply , the boot current is larger than normal data, it's short-circuit. After 2 seconds, the iPhone suddenly back to normal, we think it's  the current is too large and the damaged components are burned through.   The iPhone is turned on, but now the iPhone screen displays abnormal, it's half black and half bright.  Take out the iPhone motherboard, and then use digital multimeter to measure the fifth 5  PP_LCM_BL34_ANODE_CONN backlight anode of the J4200 display socket, it's short-circuit.  Tear off the black tape, and found that the light D4050 diode has burned and ruptured, the resistance of the diode at both ends is 941 after testin...

We received an iPad 4, the faulty described is that the iPad LCD screen is half right and half black after iPad screen replacement, after repair the iPad motherboard by the iPad owner, the iPad won't turn on. According to description of the iPad user, we know that the iPad display screen has been replaced, and because the iPad is not turn off the power when replace the screen, so it causes the iPad LCD screen to be half brighter and half black. And then the iPad user try to fix it by repair the iPad motherboard , but failed, and damaged the capacitor, as a result, the iPad won't turn on anymore. First connect iPad to the DC power supply  to check the current, we found the iPad is short circuit 3A. Remove the iPad motherboard to observe, we found the inductor L2210 and L2200 and the one side of an inductor is connected by tin. Clean it up, and then measure is again, now the iPad is not short circuit. Check iPad schematic diagram through by WUXINJI Dongle ...