Vip Pro repair phone

we share phone repair guide, especially for iPhone, and we provide hight quality phone repair tools. whatsapp: +8615767956655 skype: adk_tech (named: bellin)


Troubleshoot: iPhone 6 reports error during the flashing

Today, we are going to talk about iPhone 6 reports error during the flashing. The details is that when we flash the iPhone 6, it reports error in FORTrueData file. Now, we need to troubleshoot it. Reflash the iPhone 6, insert iPhone USB data cable and connect it on computer, the screen shows succussful connection and directly enter into DFU mode. When we root the system into 20% by Ace assistant, it stops working and reports error in FORTrueData file. Based on the above phenomenon, we preliminary judge the main problem is from damaged Logic chip or Nand flash chip. Use opening tool to disassemble the iPhone and take off the main board carefully, we find the iPhone 6 Nand flash chip was proceed before. There are much copper dropped out from the Nand chip. Use QUICK 861DW hot air station and precision tweezers to remove Nand chip from main board, then put it on Naviplus 3000s programmer. Now we are going to rewrite the SN, WiFi and Bluetooth address on the iPhone 6 NAND flash chip. Reflash the iPhone 6 and activate again. It can be successfully recovered and activated now. Get into IOS to test other functions, all works well! More iPhone repair guide and cell phone repair tools, please visit


Solved: iPhone 6 Plus won’t turn on trouble

Today, we are going to talk about iPhone 6 Plus won't turn on trouble. What's the reason, and how to solve it? Please keep reading the following page. Disassemble the iPhone 6 motherboard and connect DC power supply, there is no short circuit, then triggers we find that the current directly jump from 400mA to 1A, the main board is short circuited, now taking off the main board to observe, the iPhone 6 Nand was repaired before. Use Fluke 15B+ Digital Multimeter to measure the power supply around NAND, it shows 1.8V short circuit, we are going to remove the NAND to observe under Trinocular Stereo Microscope. It's a little dirty on Nand chip parts. First, we reprocess the pad. There were 2 points were dropped. Measure the two points and see if there is any problem. The point is measured as ground connection (the normal point value should be infinite). Disconnect the jumper wire soldered by the last repairman. After processing, measure the iPhone 6 NAND CHIP, we find it's normal power supply 1.8V. Without NAND installation, we connect DC power supply to see the triggered current is 70mA, it's DFU mode when connect with computer(it happens when no NAND on motherboard or NAND doesn't match with CPU), then we remove the NAND on WL PCIE Test Fixture to see if it can be read, the result shows the NAND chip is not bad, now we re-install the NAND. The triggered current is still 70mA, so we suspect that the NAND chip is not original, install the motherboard back and connect a computer with recovery mode, we want to check whether it can read the serial number of NAND. It can be read, so we continue to recover the data till succeed. At last, turn on iPhone again, now the iPhone can boot smoothly. More iPhone repair guide and cell phone repair tools, please focus on


Complete Repair method for iPhone 6 Won't Charging Failure

There are many reasons can cause iPhone 6 won't charging failure, at the same time, there are many solutions. In this article, we have summed up the complete repair method to fix iPhone 6 charging failure. First, disassemble the iPhone screen to direct test the battery seat voltage B+ with Fluke 15B+ Digital Multimeter, it displays 0.46V, there is no voltage can directly exclude the battery problem. Test battery seat resistance B+385 (abnormal resistance will cause white apple restart symptom) normal, disassemble the single board test the 5V sent by USB. There is a test point below the battery interface. If there is 5V, it means there is no problem with the tail plug flex cable(if not, then replace a new tail plug flex cable to test again). Second, measure whether the capacitance C1704, C1408 has 5V voltage, if neither of them has 5V voltage, you can short connect Q1701' s pin 1 and pin 3. If either of the two capacitance has 5V voltage, then jumper wire can help to solve. At the same time, Q1701 may cause the phenomenon: turn off the iPhone 6 can be charged while boot can not be charged. the same method short connection can be applied for solving this problem. Third, open and check WUXINJI schematic diagram, If both 5V power supply are normal, then test the 4.2V on the battery seat and test the C1417 and C1412. If either of them has no 4.2V, you can short connect Q1403; If both of them have no normal voltage, then you can replace the U2 (U1700) or the U1401 charge tube. U1401 charging tube damage usually has charging icon, and the more electric charge is, the less charge will increase, it won't increase anymore when approaching the certain electric charge. Fourth, U2 has a large failure rate in iPhone repair(single board boot 250mA, with DC power supply, it will auto jump about 200mA, battery power display is inaccurate, battery power consumption fast, unable to identify USB, non computer and so on). For iPhone 6, NAND is on the top of U2, and there is baseband power below U2. There is a baseband CPU on the back of it. Before disassembly, you can use heat resistant tape to protect the ICs from high temperature and cause other problems. Charging fault detection method for iPhone is basically universal (U2 chip A3B model is common used for iPhone 7). After fix iPhone 6 charging problem, please charge it to check , if the charge function is normal now, then continue to test other functions on iPhone to check whether they works perfectly. More iPhone repair guide and cell phone repair tools, please contact vip pro shop team on


Troubleshooting Tips: iPhone 7 camera function unable to work

Apple iPhone 7 camera function unable to work, which includes iPhone camera grayed out and cannot be turned on, iPhone camera won't take photos, or it can take photos but won't save to albums. I believed that all iPhone 7 users won't like this problem. Here are troubleshooting tips to fix it. As we know, the iPhone flash power supply IC damage will also cause no camera function, can take videos but unable to take photos, can take photos but unable to save photo to albums. For this case, you can replace a new iPhone 7 flash power supply IC, the iPhone camera function will back to normal. When the iPhone 7 camera function is on and the screen lights up, use a Fluke 15B+ High Performance Digital Multimeter to test the power supply status as following: The PP1V8_UT (1.8V), PP3V0_UT_SVDD (3.0V) can be measured after turning on the iPhone 7 device, however, the PP2V8_UT_AF (2.8V, PP2V9_UT_AVDD aggregation voltage) (2.9V), PP1V2_UT_VDD (1.2V) these three circuits of power supply only can be measured when the iPhone 7 camera under good state, the PP2V9_UT_AVDD circuit power supply is provided by the U2501, the U2501 is very easy to cause camera working abnormally. The best solution is to take the U2501 off and short connect by jumper wire to solve the problem. PP3V0_UT_SVDD (3.0V), PP2V8_UT_AF (2.8), VPP1V2_UT_VDD (1.2V) is sent to the camera interface J4501 respectively through inductance FL2500 FL2502 FL2505 FL2506. These inductors are easy to damage, resulting in failure to take photos. First, measure the resistance of the 5 circuit of power supply to the ground, exclude the failures of broken circuit or short circuit. Check FL2500 FL2502 FL2505 FL2506 and short connect U2501 by jumper wire. At last, you need install the iPhone, and test it. The iPhone 7 camera function is back to normal. More iPhone repair guide and cell phone repair tools, please visit


Analysis and Solved: iPhone 7/7P fingerprint function available

In order to solve iPhone 7 or iPhone 7 Plus fingerprint function available problems, we need to analysis the iPhone 7 or iPhone 7P fingerprint circuit diagram first, find out the damaged part, and then we can solve it. Connect WUXINJI Dongle to your PC, and then open the software to check iPhone schematic diagram, we can see that the iPhone power IC output PP3V0_MESA(3.0V) PP1V8_MESA(1.8V) respectively through inductance FL3803 and FL3801, next send it to interface J3801; the iPhone power supply IC-- U3702 output PP16V0_MESA(16.0V), after inductance FL3802 delivers to the interface J3801. Disassemble the iPhone, remove the iPhone motherboard, fist use multimeter to measure the voltage for PP3V0_MESA(3.0V) and PP1V8_MESA(1.8V), the data is abnormal. Now check the iPhone motherboard clearly, especially for the FL3803, FL3801 and FL3802 short connection, if something wrong here, you can weld the new short connection between them, replace the U3702. More details, please visit


Learn TO Fix iPhone 6S/6SP Screen Stop To Work Issue

The iPhone touch screen stop to work, what does it mean? When touch the iPhone display screen with your fingers, it has no response, no matter how lightly or heavily, it always stop there. Therefore, learn to fix it is very important for the user. Here is the guides that you can fix it by yourself and without iPhone repair tools, we called it as software solution Before we start the repairs, we need to know what reasons causes this issue. After the investigation, there are several reasons, they were damaged firmware, dirty screen, less memory, moist fingers, and so on. Start to fix 1. If the hardware is damaged, like touch IC or others, you need to dissemble the iPhone 6S/6S Plus, then repair or replace it. It's a big project, it need some phone repair tools (phone opening tools, microscope, solder station, etc.) and need professional mobile phone repair skills. If you are not a professional maintenance staff, then the best way is to send iPhone to professional phone repair shop. 2. Clean the iPhone 6S/6S Plus screen. In this case, you can use a soft, slightly damp, and lint-free cloth to clean the screen. 3. Clean up your iPhone memory, force close or quit all running apps, delete unused photo, document, video etc. 4. Reboot your iPhone. Press and hold the Sleep/Power button until the red slider bar appears. The Sleep/Power button is located at the top of your iPhone. 5. Reset your iPhone. Hold both the Sleep/Power and Home buttons simultaneously for about 20 seconds until the Apple logo displays. This trick has been used to deal with several software-related issues occurring on various iOS devices. 6. Adjust 3D Touch settings on your iPhone. Check the 3D Touch sensitivity settings. Go to Settings > General > Accessibility > 3D Touch and adjust the sensitivity slider. 7. Restore factory settings. Before you do this, please back up your iPhone. The process will restore your iPhone to its original factory settings, thereby, eliminate any existing problems on the software. More iPhone repair guide and cell phone repair tools, please focus vipprogrammer.


Practical Methods for iTunes error 53 on iPhone 6 ( won’t boot)

The iPhone 6 was reported iTunes error 53 by flashing, and the iPhone 6 won't turn on. This is frustrating for the iPhone users. Luckily, here are practical methods to fix these errors. Disassemble the iPhone 6 device and use DC power supply to test, when power on the iPhone 6 (click the power button moment), the current value reaches 200-250MA. The current value of normal iPhone should be around 50-60 Ma. It is obvious that there is a leakage of electricity. Leakage and fingerprint failure, it can be preliminarly judged that the iPhone 6 fingerprint part has electric leakage phenomenon, resulting in fingerprint failure. And for repair the error 53. First, measure the 2 power supply of fingerprint. 3.0V voltage is measured low. The value is very close to short circuit! So it can be judged the problem is 3.0V short-circuit, which caused by low power 3.0V on fingerprint so that it would get unresponsive, for error 53, now we know the circuit is short, of course the rosin is required. Use rosin method to find the short circuit part. Open the WUXINJI dongle to check the location map is C2132, then check the capacitor C2134 principle diagram, we can see the part changes color is the bypass capacitor of capacitance PP3V0_MESA fingerprint power supply, the capacitor short-circuit is resulting in abnormal PP3V0_MESA, so this caused fingerprint and boot failure, error 53, after removing the several capacitors, the troubles are finally solved! Rosin method: Apply rosin to smoke the relevant parts into white, then add the voltage on the short-circuit part, voltage was gradually increased (do not exceed the nominal value of 3.0V) until the right part gets heated and turns into different color because large current, then replace a new one to solve the problem) After the components get into white, add the voltage in the right hand side of the second pin(the negative pole of Fluke 15B+ Digital Multimeterconnects ground first, use positive pole to clip a sharp meter pen, and touch the short-circuit part by the pen, adust the voltage from 0.8V gradually increased until the short part gets heating and changes color), you can observe more carefully by phone repair Trinocular Stereo microscope or magnifying glass. More iPhone repair guide and cell phone repair tools, pleas visit


Analysis And Fix: iPhone 6S fingerprint part faulty

Are you still worry about the iPhone 6S fingerprint part faulty? According the following solutions, we can fix it. First, we need to analysis the iPhone 6S schematic diagram, and then we can find the problem. With the help of WUXINJI Dongle, we can check iPhone 6S circuit diagram easily. The power supply of fingerprint has 3 circuits, one is 1.8V, one is 3.0V and another one is 16.5V. If the 1.8V and 3.0V is abnormal, it cause fingerprint failed to turn on, these two voltages can be reached to fingerprint interface when you press the iPhone power button. The voltage of 3.0V and 1.8V is supplied from iPhone power IC. If the circuit of 16.5V is abnormal, it will cause the iPhone can open the button that adds fingerprints, but there is no response when you add fingerprint. This voltage will be measured 16.5V when the fingerprint is opened and the iPhone Home button is touched by the finger. If a fingerprint addition failure occurs, firstly use Fluke 15B+ Digital Multimeter to measure the iPhone to confirm whether there is 1.8V and 3.0V. If none of 3.0V or 1.8V, then measure whether there is a short-circuit phenomenon in this circuit. If short circuit phenomenon exists, then use rosin method to find the short circuit components. If it is open circuit or the resistance is normal but without voltage, check short connection FL4100 FL4105, re-install or replace the iPhone power IC. If add a fingerprint without prompting for a failure, but there is no response when touching the home button with a hand, open the iPhone fingerprint function, click add fingerprint, when you touch the home button with your finger, measure the voltage whether is about 16.5V. If not, check short connection FL1407, use hot air gun and tweezers to replace U4040. If the 3.0V and 1.8V voltage all is normal, but it prompts for failure when you add a fingerprint, check the diode data of interface 7/9/15/17/19. If it's open circuit, check the short connection and capacitor FL4110 R4111 FL4112 R4115 R4116, you can short connect it. If it is the iPhone home button fails, check short connection R4117. One more thing, the difference with iPhone 6 is that the iPhone 6S has more circuit. The left of the fingerprint line interface circuit map is control signal of fingerprint; the right part is new function--Force Touch, also called pressure feeling control. Article from


GUIDE: Charge Function not working on iPhone 6S Plus

If your iPhone charging 6S Plus function can't be applied smoothly, this issue will give you a lot trouble. So, you have to fix it. Here is the guide for charging function not working on iPhone 6S Plus. We will analyze it in two ways, phenomenon and solutions. Trouble phenomenon: the iPhone battery power percentage is getting less during the charging, power down status can be charged successfully but cannot charge after boot and unable to recognize USB, etc. Solution Damaged charging capacitor L2300 also will cause iPhone power percentage won't increase during the charging. After disassemble the iPhone by phone opening tools, remove the iPhone motherboard, use Fluke 15B+ Digital Multimeter to measure the 5.0V voltage (PP5V0_USB) next to the charging IC, and then measure the 5.0V voltage (PP5V0_USB) next to the USB control IC to check is it working properly. If both these 5.0V is working properly, then you just need replace the iPhone charging IC and USB control IC. If 5.0V(PP5V0_USB) next to charging IC exist, but 5.0V(PP5V0_USB) next to USB control IC doesn't exist, the iPhone power down status can be charged successfully but cannot charge after boot, or can't recognize USB. In order to fix this trouble, we can use hot air gun to short connect charge protection tube. The iPhone Charging principle PP5V0_USB(5.0V) that was sent from the iPhone Tail Plug circuit, and then continue sent to the charging IC via the trailing plug interface, and then go through the charging protect tube, finally send it to iPhone USB control IC. More iPhone repair guide and iPhone repair tools, please visit vipprogrammer


What reasons causes iPhone 6S leakage error? How to solve?

If provide power on iPhone 6S but is shows leakage or large current, then we need to use Digital Multimeter to measure the diode data of BATT_VCC and VCC_MAIN! If there is a short circuit, we can apply some rosin on the iPhone motherboard component, use hot air gun to smoke it, and supply voltage on short circuit line, the voltage starting from 0 and gradually increasing, and then you can find the short circuit parts. In this part, we have to add voltage on short circuit place. The other iPhone power leakage situation is that when you provide power on it, it won't leak, but after you press the iPhone power button, the leakage or large current fault happens. This fault is because there is a leakage component on the circuit lines that was output by power supply IC. In this case, you need to measure the diode data of each circuit line to find the one that's leaking. If the leakage is large, you can use rosin methods to find the short circuit parts (the methods the same as above). In addition to the leakage of the situation caused iPhone no boot, there are other reasons cause iPhone won't boot. 1. Reports different iTunes error. If it reports iTunes error 4005/ 4014/ 9/ 14/ 40, usually it is caused by iPhone Nand flash or iPhone CPU. Because the iPhone CPU is unable to weld, you can re-install it or replace the Nand flash, and then flash it again. If it reports iTunes error 1/47/48/50, usually it is baseband part problem; you can re-install iPhone baseband CPU and power IC. Moreover, damaged compass will cause iTunes error 4013, just replace the compass IC. If it reports iTunes error 56, mostly it's caused by NFC module virtual welding or damaged. If baseband power IC is virtual welding, you can re-install or replace it. 2. Stuck on Dozens of MA when booting. This fault mostly caused by CPU or iPhone NAND flash virtual welding or damaged. For water damaged iPhone, you can replace power IC/ audio IC/ compass IC/ USB control IC/ charge IC. 3. Stuck on White Apple logo when booting. Replace the USB control IC U4500 charge IC U2300. If the fault still exists after replacement, then it should be the CPU or NAND flash problem, you can re-install the iPhone NAND flash. 4. No response when booting. Measure whether these is a VCC_MAIN, if not, replace the charge IC U2300, if VCC_MAIN is normal, and then replace the power IC U2000. More iPhone repair guide and cell phone repair tools, please visit

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