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)

06.07.2019.

How to repair iPhone 7 charge failure (slowly)

Today, we're going to talk about iPhone charge failure. Here is an iPhone 7 with charge failure, the trouble detail is that the iPhone 7 is charging very slowly, which is abnormal speed. Even we charge it for a long time, but the iPhone battery power percentage does not increase much. How to repair this problem? 1. Switch to normal amp charging source When you use a low amperage charging source, it will cause your iPhone charge slowly, so you need to check the charging source, and switch it to normal amp charging source. 2. Use high-quality lightning cable If you are using a cheap lightning cable to charge your iPhone, Not only is the charging speed slow, but it may also damage your iPhone. So, the best choice is used original lightning cable. or high quality iPhone lightning cable. If the original lightning cable is damaged, you can bought the new one from Apple, or you can buy a high-quality iPhone lightning cable from other online sources you trust. 3. Clean up iPhone lightning port Because the Lightning cable (charging cable) you use to charge your iPhone has 8 pins, so if there are some dust or debris stuck in the lightning port of your iPhone; it will obstruct the pins, and cause your iPhone to charge slowly or not charge at all. In this case, you can use a Superfine Dustless Cotton Swab to clean the iPhone lightning port gently. 4. Use high-quality Charger If you are using a cheap charger or a low-power USB port to charge your iPhone,in this case, the Charger or port cannot give iPhone enough power, so there will be slow charging. The best choice is used original iPhone charger, or high-quality iPhone charger. 5. Turns to Airplane Mode or turn off iPhone while charging In the Airplane Mode, the phone can charge up to twice as fast (or more). If you want to quick-charge your iPhone, put your iPhone on the ‘Airplane Mode. By the way, in this mode, you won't be able to make/get calls and cellular. Turn off iPhone while charging, the iPhone will charge a lot faster than usual, because the iPhone does not consume any power in this way. Also, in this way, you are unable to use iPhone, no calls, no messages, no cellular, no WIFI, etc. 6. Maintain iPhone battery regularly It's important to maintain the iPhone battery regularly. Apple advises that allow your iPhone battery to die at least once a month, "For proper maintenance of a lithium-based battery, it's important to keep the electrons in it moving occasionally. Be sure to go through at least one charge cycle per month (charging the battery to 100% and then completely running it down)," 7. Replace the new iPhone battery If the iPhone battery is damaged, then you can't charge it at normal speed. First you can test the iPhone battery with iPhone battery tester, so you can know the condition of the iPhone battery. If the iPhone battery condition is bad or the battery is deformed or it has other physical damage, then you should replace the new iPhone battery. 8. Repair iPhone motherboard After replace the iPhone battery, recharge the iPhone again, if it's still not charging well, then you should check iPhone motherboard problems, such as iPhone USB charge IC, or other iPhone circuit problems. Finally, we've summarized some of the possible causes of this failure: - Power voltage - iPhone lightning cable problem - iPhone lightning port problem - iPhone charger problem - Software problem - iPhone battery problem - iPhone motherboard problem Note: more iPhone repair guide or phone fix tools, please contact China Phonefix Shop Team on vipprogrammer.com

27.06.2019.

Solution: iPhone 6 won't turn on (water-damaged)

Today, we are going to talk about iPhone 6 won't turn on problem. The iPhone 6 is damaged by water, and then it won't turn on. Mostly, it's caused by hardware problem. Here we have a solution for it. Use screwdrivers to remove the 2 screws that next to the iPhone lightning port, and the put iPhone on the CPB LCD screen separator, and then use phone opening tools to open the iPhone display assembly. After open the iPhone display assembly, we can see that the water damage indicator is red. Disconnect the iPhone battery, connect iPhone motherboard to the DC power supply, press the iPhone power button, the Apple logos appears on iPhone display screen. However, after about 15 seconds, the iPhone display screen turns black, and it's failed to enter the IOS system. Check DC power supply, the boot current stuck on 510mA, which is abnormal. Generally, the iPhone won't turn on after water damaged and the abnormal boot current is caused by a short circuit because of the water damage of the iPhone motherboard. Remove the iPhone display assembly and take out the iPhone motherboard. Put iPhone motherboard under the microscope to observe, we can see that there are many moldy traces on the motherboard. Clean up the iPhone motherboard with PCD cleaner, and then connect the iPhone battery with DC power supply, use tweezers to power up, the boot current stuck on 220mA, which is still abnormal. We need to remove those moldy components, and then clean it up carefully. Put iPhone motherboard on the iPhone PCD holder fixture, first use QUICK 861DW hot air rework station to remove the CPU shielding plate, and then put iPhone motherboard under the microscope. According to the observation, we can see that the U1501 and U1503 have moldy traces, heat them with hot air gun, and then use tweezers to remove them. Apply some solder paste, and then use soldering iron to solder it. Now, remove the U2402 and U0900, we find the area under the U2402 has got seriously mildewed, we suspect the problem was caused by this part. Apply some solder paste to the solder pad, and then use soldering iron tip to remove the tins, clean it with PCB cleaner, and then install the new IC. Next, install the U1501 and U1503 to the iPhone motherboard with same methods, and then measure the boot current again, now the data tested is normal. Now, assemble the iPhone, press the iPhone power button, now the iPhone can be turned on smoothly. Note: More iPhone repair guide and cell phone fix tools, please contact with China Phonefix Shop Team on vipprogrammer.com

22.06.2019.

Solved: iPhone 7 Plus Touch ID doesn't work

Today, we are going to talk about iPhone touch ID problem. Here is an iPhone Plus with touch ID problem, the iPhone 7 Plus touch ID doesn't work, we need to solve it. For the iPhone touch ID problem, it could be caused by hardware error and software error, the hardware solution is more complicated, therefore, if you are facing the touch ID failure on your iPhone 7 Plus, you can try to fix it with the following software solutions. 1. Make sure your finger is clean and dry If the finger is dusty, clutter, or liquid, it will prevent the iPhone from identifying your fingerprints, which can cause touch ID failure. When you touch the iPhone 7 Plus home button with your fingers, please make sure your finger is clean and dry, so it can make the touch ID work normally. You can wipe your fingers with a clean cloth, make it clean and dry. 2. Make sure the iPhone home button is clean and dry If the iPhone home button is covered by dust, clutter or liquid, then it also will prevent the iPhone from identifying your fingerprints, eventually the iPhone touch ID failed to work. Before you are using touch ID, please make sure the iPhone home button is clean and dry. You can use Non Dust Cloth to clean up the iPhone home button, make it clean and dry. 3. Remove and Re-add fingerprints The problem with the fingerprint itself can also cause the failure of the iPhone touch ID. We can try to fix it by removing the old fingerprint and re-add the new fingerprint. First, unlock iPhone by entering the password, and then Go to Settings > Touch ID & Passcode > Enter the passcode of your iPhone > Scroll down to find fingerprints. Tap on the fingerprint, which you want to delete and then Tap on Delete. Go to “Settings” > “Touch ID & Passcode” > enter the passcode, now please tap “Add a Fingerprint”, press the “Home” button using the same finger that you want to get as a new fingerprint scanner. Wait for vibration and release the finger from the Home button. Make sure to press the Home button from every angle perfectly. 4. Restart iPhone 7 Plus If there are software errors, it may cause iPhone 7 Plus touch ID failure. For the many simple software errors, we can fix it by restarting. In order to restart the iPhone 7 Plus, please press and hold the iPhone Power button until the Slide to Power Off command appears, drag the slider to the right to turn your iPhone off, and then press the iPhone power button again to turn on the iPhone 7 Plus. 5. Restore iPhone 7 Plus If there are more seriously software errors, after restarting, the problem is still there, then we should try to fix it by restoring. Connect the iPhone 7 Plus to the computer via iPhone lightning cable, open the iTunes on the computer, update iTunes to the latest version, and then use iTunes to restore the iPhone 7 Plus. 6. Get help from Apple or iPhone repair shop After tried the above solutions, if the iPhone 7 Plus touch ID failure is still exist, then perhaps there is a hardware errors on iPhone. At this time, if your iPhone still under the warranty, you can contact with the Apple care for help; if your iPhone is out of warranty, you can contact with the professional iPhone repair shop for help. Note: more iPhone repair guide and cell phone fix tools, please contact China Phonefix Shop Team on vipprogrammer.com

14.06.2019.

Solution: iPhone 6S doesn't boot after dropping

Today, we are going to talk about iPhone 6S doesn't boot problem. This iPhone 6S accidentally dropped to the ground, and then the iPhone display screen is broken, moreover, the iPhone 6S doesn't boot anymore. How to fix this problem? Here is solution. Use phone opening tools to disassemble the iPhone 6S, remove the iPhone display screen, disconnect the iPhone battery, and then take off the iPhone motherboard. Connect the iPhone motherboard to the DC power supply, and then use DC power supply to measure the iPhone current. After measurement, the current doesn't display, and the iPhone motherboard doesn't have the obvious short-circuit phenomenon. Short connect the boot pin to turn on the iPhone 6S, after booting; we can see that the current is larger than normal value, which means this iPhone 6S boot circuit has a short-circuited phenomenon. Use digital multimeter to measure the diode data for the power supply of each circuit on the iPhone motherboard, it's found that the diode data of the PP_CPU voltage is 0.002, it's obviously smaller than the normal value. Login ZXW online account to check iPhone 6S schematic diagram, we can see that there are many components that connect to the PP_CPU voltage, so we are going to use rosin method to find the short-circuit point. Stick the QUICK TS1200A soldering iron head to the rosin, and then evenly smoke the rosin on the surface of each component. Short connect the boot pin to turn on the iPhone 6S, we found the rosin on a capacitor next to the iPhone CPU is melted fast. Check iPhone 6S bitmap and schematic diagram, we know this capacitor is C2006, we need to replace it. Attach the iPhone motherboard to the PCB holder fixture, and then put is under the microscope. Now use QUICK 861DW hot air rework station and tweezers to remove the C2006. Now use digital multimeter to measure the diode data of the PP_CPU voltage, it's normal now. Install the new C2006 capacitor to the motherboard, and then measure it again, the data also is normal. Finally, assemble the iPhone 6S, press the iPhone power button, after few seconds, the Apple logo appears normally, and then it enters IOS systems successfully. Test the functions of the iPhone, they all work properly. Note: more iPhone repair guide and cell phone fix tools, please contact with China Phonefix Shop Team on vipprogrammer.com

31.05.2019.

Best fix iPhone 7 Plus won't turn on issue (drop-damaged)

Today, we are going to talk about iPhone 7 Plus won't turn on issue. After press the iPhone power button, the iPhone 7P doesn't response, the iPhone display screen keeps black. This iPhone 7 Plus was damaged by dropping, now we are to fix it in the best way. Use phone opening tools to disassemble the iPhone 7 Plus, and then carefully remove the iPhone battery. Connect iPhone 7 Plus to the DC power supply, press the iPhone power button to measure the iPhone boot current, the current stuck on 350mA, it is abnormal data, which means there is a short-circuited phenomenon on iPhone logic board. Remove the iPhone logic board, and then using a digital multimeter to measure the diode data of the capacitor around the iPhone power supply IC, all data are normal except C1823, the data of C1823 is 0, which means the C1823 is short-circuited Open the WUXINJI Dongle to check iPhone 7 Plus schematic diagram, we know that the C1823 is the filter capacitor of PP1V8-SDRAM, and it is directly connected to CPU SDRAM. Put iPhone logic board into the iPhone PCB holder fixture, and then use QUICK 861DW hot air rework station to remove the shielding cover from CPU. Now, Put iPhone logic board on the CNC chip grinding machine, and then use CNC chip grinding machine to remove the CPU SDRAM, it's more convenient and safer than manual manipulation. After grinding, put iPhone logic board into the iPhone PCB holder fixture again, clean up the PCB, and then use CPU graver tool to remove the black adhesive. Apply some BGA solder paste to the bonding pad, put new SDRAM to the correct place, and then use hot air gun to solder it. After soldering, cool iPhone logic board, and then clean it again. Measure the iPhone logic board by DC power supply, now the data is normal. Install the iPhone, press the iPhone power button, the iPhone 7 Plus can be boot smoothly. After enter the IOS system, test all functions on the iPhone, all works good. Note: more iPhone repair guide and cell phone fix tools, please contact China Phonefix Shop Team on vipprogrammer.com

25.05.2019.

Software Methods for iPhone XS iTunes unknown error 53

Today we will talk about the iPhone XS iTunes error problem. This iPhone XS has an iTunes unknown error 53, we try to fix it by some software methods. 1: Check iTunes Version No matter for updating IOS on the iPhone or restore the iPhone, they'll all needs to use the latest iTunes version. If the iTunes reports unknown error 53 during the iPhone XS restoring, first we need to check iTunes version. For MacBook users, please open iTunes software and select iTunes from menu on the MacBook, tap "Check for Updates", if the update is available, then please follow simple steps to update the iTunes to latest version For Windows users, please open iTunes and select Help from menu on computer, tap "Check for Updates", if the update is available, then please follow the simple steps to update the iTunes to latest version. After finish the update, please restore the iPhone XS again, if the unknown error 53 still exist, please try next solution. 2: Restart Computer If there are some problems on the computer, it also will cause iPhone get iTunes error. For many simple software problems, you can fix it by restarting. Please press the power button on the computer to power down it completely, after few minutes, please press the power button on the computer to power on it. When the computer is turned on, please restore the iPhone XS again, if the unknown error 53 still exist, please try next solution. 3: Check iPhone lightning cable and USB port If the iPhone lightning cable or USB port is damaged, it will cause a failure connection between iPhone XS and computer. We need to check iPhone lightning cable and USB port to make sure they are in good condition. Use a good quality iPhone lightning cable, try to restore it again, if it's not working, then we can try difference USB port or try another computer. If the error 53 still exist, that means it's not the problem of the iPhone lightning cable or USB port, we should try next solution. 4: Force restart iPhone XS Some damaged software or crashed Apps will cause iPhone XS failed to restore and get an unknown error 53. Luckily, for these simple software problems on iPhone, we can solve it by restarting. Please quickly press and release the iPhone Volume Up button, and quickly press and release the iPhone Volume Down button, and then please press and hold the iPhone power button until the Apple logo appears again, finally release the buttons. Now, connect iPhone XS to the computer to restore again, if you still get an unknown error alert, try next solution. 5: Reset All Settings on iPhone XS The iPhone setting problems also can cause iTunes error; we can try to fix it resetting all settings. Reset all setting won't erase any information on your iPhone XS, such as the photos, videos, files, etc. In order to reset all setting on the iPhone XS, please go to Settings-> General-> Reset-> Reset all settings. After the reset, the iPhone XS will automatically restart. If this method still doesn't work, then we should contact Apple care or iPhone repair shop to get help. From: vipprogrammer.com

14.01.2019.

How to fix iPhone 7 Plus half-darkness screen problem?

In this article, we will share a troubleshooting guide for iPhone 7 Plus half-darkness screen problem. After turned on the iPhone 7P, the iPhone screen display abnormally, half screen is darkness, and the other half screen is brightness. Put the logic board under the trinocular stereo microscope and check carefully, there is no sign of water damage and deformed. Next, let's assemble the iPhone and test it. Install the logic board and display components. Connect to the DC Power Supply and press the power button, the screen lights up and appears the Apple logo. We can see that the right side of the screen is darker than the left side. From this, it is judged that the failure may be related to the backlight circuit. Use phone open tools to unpack the iPhone and remove the display assembly. Take out the logic board, diode mode measurement is performed on the backlight related pins on the display connector J4502. The measured value of the needle 45 is OL, which is abnormal. The normal value should be around 450. Next, check with WUXINJI dongle , you will see that the output voltage of the backlight IC U4601 reaches the pin 45 of J4502 through C4602, FL4601 and C4605. Therefore continue to run the diode mode measurement of the C4602. The measured value is normal. It is thus judged that the abnormal value of the pin 45 may be caused by the open state of its related circuit or the failure of the display connector J4502. Check 4502, we found that Pin 45 has been pseudo-welded. To further confirm the fault location, remove the J4502 from the logic board. Before removing the connector, consider protection, we need to attach the heat resistant tape to the surrounding components. Then apply some solder flux paste to the J4502, then remove the J4502 with a heat gun. After removing the connector, we use fluke digital multimeter to measure the diode value of pin 45 on the pad. The test value is normal. Now we confirm that the fault is related to the J4502. Replace the new display connector. Heat with a heat gun, install the new display connector in place and solder with a 858D hot air gun. Next, use the PCB Fixture Platform to fix the motherboard for soldering smoothly. Install the iPhone 7 Plus,and test it, now the iPhone 7 Plus displays normally. Note: more iPhone repair guide and cell phone fix tools, please contact Chine phonefix Shop Team on vipprogrammer.com

08.01.2019.

Here! iPhone 7 WIFI Failure With PCB repairing solution

Today, we are going to talk about iPhone 7 wifi failure problem, and share a PCB repairing solution for iPhone WIFI problem. This iPhone 7 fell into the ground, the iPhone screen is damaged, so we need to replace the new screen, the problem is that after replacement, the iPhone WIFI button can't be operate, it won't turn on, the iPhone WIFI function can't be used. Step 1 Ue phone opening tools to disassemble the iPhone 7, and then take out the iPhone motherboard. As we know, the iPhone 6S and later, the iPhone WIFI IC was bound to iPhone Nand flash. Because this is drop-damaged iPhone 7, so first we need to check iPhone WIFI IC. Step 2 Before we remove the iPhone WIFI IC, we need to protect the iPhone CPU. Use High Temperature Resistant Tape to cover the iPhone CPU, and then use QUICK 861DW hot air rework station to heat the iPhone WIFI IC, and then remove it. Step 3 After remove the iPhone WIFI IC,we can see that there are 2 pieces useful pins are dropped. The 19 pin and 22 pin on the left side is dropped, and 20 pin almost dropped. For the 19 pin and 20 pin, they can be found the connection point on the left side, so we can solder the jumper wire. For the 22 pin, we need to solder the jumper wire from C0811. Step 4 Put iPhone motherboard under the microscope to check four grounding pins, they are not connected, which means the pins that connected to the ground also will virtual welding, in resulting iPhone baseband power supply voltage directly send to the iPhone baseband CPU, the voltage is too higher, and then burned internal of the iPhone CPU. Step 5 When we replace the iPhone baseband power, if the baseband circuit tested is normal, then we can connect these 4 pieces grounding pins. After finish the jumper wire welded, use digital multimeter to measure the resistance value, the value tested is normal. Step 6 Now, install the iPhone CPU back the iPhone motherboard, and then use DC power supply to check whether there is shorted circuit issue. Because the shorted WIFI bus will burn the iPhone CPU. Step 7 After testing, the current and voltage are normal. Power on iPhone 7, the iPhone WIFI button can be turned on properly, and then WIFI function is working properly. Continue to test other functions on iPhone, all works good. From: China Phonefix shop team (vipprogrammer.com)

31.12.2018.

Troubleshooting Tip: iPhone 8 doesn’t vibrate

Today, we will share a troubleshooting tip for iPhone 8 doesn't vibrate problem. After powering on iPhone 8, everything works find, except iPhone vibration function, it doesn't vibrate when the iPhone is in vibration mode. First, we need to disassemble the iPhone 8. Use phone opening tools to disassemble the iPhone 8, and then take out the iPhone motherboard. Because it's the vibration problem, so now we try to fix it by replacing the new iPhone vibrator IC. Remove an iPhone vibrator IC form junk iPhone motherboard, and then install it to the iPhone 8 motherboard. Power on iPhone 8,go to settings, there are several vibrations. But after selected other option, there is no vibration? When press the mute button, nothing at all. What's trouble? Is the chip is been burned? Remove the chip by Quick 861DW and measure the value! Look for a resistance map and test with digital multimeter, the result is normal, then install, turn on and test. From the beginning, there are vibrations, but after entered into option and pointed two , there is nothing. We feel the amplitude of the mute silent button is a bit small, and enter large option, have no vibration. Have already replaced two motherboards, and we feel a little anxiety, may be is the vibrator go wrong? Try replacing a new vibrator, unluckily, the vibrator is broken after installed. Replace the new iPhone vibrator, and then test it, now the iPhone vibration function works good. The repairs end! Note: More iPhone repair guide and cell phone fix tools, please contact with China Phonefix Shop Team on vipprogrammer.com

24.12.2018.

Repair Guide: iPhone 6S failed to boot (iPhone charge IC problem)

We've received an iPhone 6S to repair from our customer, the fault described is that after charging the iPhone 6S, the iPhone 6S turns black and fail to boot. Here is the repair guide. According to the fault description, we could judge that the problem is caused by charging part. There are 3 components are directly related to the charge, they were Q2300, U2300 and U4500. Firstly, connect the iPhone motherboard to DC power supply and test the current, the trigger current jumps directly from 200mA, while the normal current should be around 40 mA. This phenomenon is likely caused by a short circuit in the mains supply's LDO supply. PP3V0_TRISTA and PP3V3_ACC these two are supplied by all LDO power supply, so the most likely damage is the USB U4500 IC. Remove the USB IC with QUICK 861DW Hot Rework Station , trigger current about 40mA, and then replace the USB IC. After replacing the iPhone USB charging IC, turn on iPhone and test it, the iPhone 6S is turned on successfully. Now test the iPhone charge function, it works good. Continue to test other functions, all works properly, the repair is end! Note: more iPhone repair guide and cell phone fix tools, please contact with China Phonefix Shop Team on vipprogrammer.com


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