Saturday, June 22, 2019

how to fix iPhone 7 Plus fast consumption failure

An iPhone 7 Plus with fast consumption failure, what causes the iPhone battery to consume so fast? Actually, iPhone fast consumption is common problem, the iPhone setting , the iPhone IOS system , the Apps , the iPhone battery , the iPhone motherboard all can cause this failure, so how to fix it?


1. Make Sure The Auto Brightness Is On

For the iPhone display screen, we can adjust the brightness in the system. Someone like to keep their iPhone display always on, but continuous screen brightness consumes a lot of battery power, we can use Auto Brightness function to avoid this case.

In order to make turn on the auto brightness, please go to Settings -> General -> Accessibility -> Display Accommodations. And you can go to Settings-> Display & Brightness to set the time for Auto-Lock.

2. Disable Some Notifications

When you download the new App, they will prompt you that allow notification or not, and you will choose allow it. However, for many Apps, the notification are not necessary,because the notification will consume the power of the iPhone battery.

In order to disable the notification for App, please go to Settings-> Notifications, check NOTIFICATION STYLE, and then tap the App you want to disable the notification, and then turn the button to the left side on Allow Notifications.

3. Turn On Low Power Mode

Low Power Mode will reduce display brightness, optimizes device performance, and minimizes system animations. Low Power mode automatically turns off when your device hits 80 percent charged. After you turn on low Power mode, when your iPhone battery charge is below 20%, it pauses background application refreshes and automatic downloads, so it can maintain the basic functions of the iPhone 7 Plus.

Turn on the lower power mode on iPhone 7 Plus, please go to Settings > Battery, and then tap Low Power Mode.

4. Disable Some Location Service

Most of Apps has location services, and but not all location service are needed. As we know, there are two options for location service on App, one is Never, and the other one is While Using the App. For some App, we can choose never, because the location service will constantly drain your iPhone battery.

In order to disable some location service on App, please go to Settings -> Privacy -> Location Services, tap the Apps that you want to disable the location service, and then choose Never.

5. Other solutions:

- Check iPhone battery

If the iPhone 7 Plus has been used for a long time, then there could be a problem with the iPhone battery. We can use iPhone battery tester to test the working status of the iPhone battery, if the working status tested are not good, then we should try to replace the new iPhone battery.

- Check iPhone motherboard

If there is a problem with the iPhone motherboard, then it also will cause the iPhone battery consumption problem. We can disassemble the iPhone to measure the iPhone 7 Plus motherboard.

Friday, June 14, 2019

4013 Error: iPhone 6S Plus 4013 error fix details

 4013 error appears on the iPhone 6S Plus, how to fix it? When we use iTunes to restore the iPhone 6S Plus, it reports an unknown error 4013 and failed to restore. We tried restart the iPhone, update the IOS,  and try to restore it with another computer, but all failed. Then we go to check iPhone motherboard, and we found the problem, here is the fixed details.



Use phone opening tools to disassemble the iPhone 6S Plus, remove the iPhone display screen, disconnect the iPhone battery, and then remove the iPhone motherboard.


Put iPhone motherboard under the Trinocular Microscope to observe,  we found this iPhone has traces of being repaired; the iPhone baseband IC and iPhone baseband power IC has the traces of soldering.

We need to reball this IC. Reballing the tin on the chip, and then solder the iPhone baseband IC and iPhone baseband power IC. Now connect the iPhone motherboard to the computer to test it.

Use iTunes to restore it, when the white Apple logo appears, it stuck on progress bar and won't move, according to our experience, this problem mostly is caused by iPhone Nand flash.

Use digital multimeter to measure the each power supply on the iPhone Nand flash, all data measured are normal.


Attach the iPhone motherboard to the PCB holder fixture, and then use QUICK 861DW hot air rework station and tweezers to remove the iPhone Nand flash, and then install the new iPhone Nand flash.

Now connect it to the PC, use iTunes to restore it, now the progress bar goes smoothly, and then it enters the activation interface.  Assemble the iPhone 6S Plus and power it, everything goes well!



Sunday, June 9, 2019

iPhone 7 front camera doesn't work with Troubleshooting tips

The iPhone 7 front camera doesn't work anymore after water damaged,  when open the iPhone front camera, it keeps black and won't take photos or videos, we can fix it here!

Becasue the iPhone 7 front camera doesn't work after water damaged, is the iPhone front camera itself damaged? Try to fix it by replacing the new iPhone front camera.


Use phone opening tools to disassemble the iPhone 7, remove the iPhone display disassembly, and then remove the iPhone front camera.

Next install it with the new iPhone front camera, and then install the iPhone 7 to test, but the problem is still there, which means it's not the problem of the iPhone camera, is it caused by iPhone motherboard?


Disassemble the iPhone 7 again, remove the iPhone display assembly, disconnect the iPhone battery, and then take off the iPhone motherboard.

Observe the iPhone motherboard by microscope,  we found that the area of water had corroded and blackened.  According to the iPhone schematic diagram, we know that they are the iPhone front camera 1.8V power supply insurance inductor FL2901 and right corner of the camera socket.


Attach the iPhone motherbaord ot the PCB holoder fixture, clean it with PCB cleaner, apply some solder paste to it, and then use QUICK 861DW hot air rework station to solder it.

After the motherboard cools, assemble the iPhone 7. Press the power button to turn it on, test the iPhone camera, now the iPhone front camera is working normally, and all other functions tested are normal.

Saturday, April 27, 2019

Solved: iPhone 6 Plus always restarting and got error 9

Today, we are going to talk about iPhone 6 Plus restart problem. After pressing the iPhone power button, the iPhone screen displays properly, but it won't turn on smoothly, becuse it always restarting, and it got a iTunes error 9. How to solve this problem?


Step 1:  Force restart iPhone 6 Plus
In order to force restart iPhone 6 Plus, please press the iPhone home button and the iPhone power button at the same time, after about 10 seconds, the Apple logo will appears on the iPhone display screen, and then you can release both button.

However, after the Apple logo appears, the iPhone 6 Plus was back to restart automatically.

Step 2: Update IOS

In order to update IOS, please connect the iPhone 6 Plus to the computer via iPhone lightning cable, open iTunes on the computer, and then use iTunes to update the IOS.

After updating, press the iPhone power button, the Apple logo appears normally, the problem still the same.

Step 3: Restore iPhone 6 Plus

In order to restart iPhone 6 Plus, please connect the iPhone 6 Plus to the computer via iPhone lightning cable, open iTunes on the computer, make sure the iTunes is latest version, and then use iTunes to restore iPhone.

However, it failed to restore and the iTunes reports unknown error 9.

According to our experience, the iPhone restarts automatically when white Apple logo appears, and there is a iTunes error 9, these problems are related with iPhone CPU, iPhone EEPROM IC and iPhone Nand flash.

Step 4: Solve it in hardware aspect

Use phone opening tools to disassemble the iPhone 6 Plus, remove the iPhone motherboard, there is no obvious faulty point.

Remove the iPhone CPU cover shield, apply some heat-resistance tape to the components next to the iPhone CPU, and then use QUICK 861DW hot air rework station and tweezers to check remove the iPhone CPU.

After removing the iPhone CPU, it's found that there is a circuit leading to the eeprom was disconnected, and the solder pad of the another circuit also is unstable, so we are going to solder a jumper wire to the corresponding pins of the eeprom IC.

Attach the iPhone motherboard to the PCB holder fixture, and then put it under the microscope. Use hot air gun to solder the jumper wire on the iPhone CPU solder pad. When it's done, soldering this jumper wire to the pins of the eeprom.

Now we need to weld the iPhone CPU back the motherboard, and then assemble the iPhone 6 Plus.

Finally, press the iPhone power button, the iPhone 6 Plus is turned on properly. Testing the functions, all functions works properly.

Friday, April 19, 2019

ZXW software won't open? – Download upgraded V3.0 ZXW software

ZXWTEAM upgraded the ZXW V3.0 software, and then some users complained that their ZXW online account can't be used, because the ZXW V3.0 software doesn't work, because you need the upgraded V3.0 ZXW software.  Generally, the V3.0 ZXW software can be updated automatically, but some regions failed to update automatically, here you can download the upgraded V3.0 ZXW software.






After opening the ZXW V3.0 software on the computer, it needs to be updated, you can follow the tips to update it. If it reports update error or update failed, you can use this link.



Upgraded V3.0 ZXW software download link:


https://mega.nz/#!JZ0zSYyD!GJ7qLWYoucfLppILEL3l4vhrMNphnAawKhik0IidDB0


Now, you can open the software, login your ZXW account, now you can use the ZXW online account smoothly.

Saturday, April 13, 2019

Drop-damaged iPhone X speaker doesn't work- how to fix?

The iPhone X speaker doesn't work after dropping, how to fix it? After checking, we confirmed the iPhone X speaker is damaged by dropping, now we need to fix it.


Test the iPhone X, when we click a ringtone, there is no voice from the bottom speaker. We insert the earpiece, we can hear the voice in earpiece mode.

Based on our experience, the iPhone audio circuit is normal, but the bottom speaker is not working, we need to disassemble the iPhone X again.

Use phone opening tools to disassemble the iPhone X, carefully remove the iPhone X display screen, disconnect the iPhone battery, and then disconnect the iPhone X tail plug flex cable.

Use digital multimeter to measure the socket of the iPhone tail plug flex cable, the data tested is normal, which means the bottom speaker is working properly. Measure the iPhone motherboard connector, after measuring, we found there is circuit line of the one pin is open circuit.

Login to ZXW online account to check iPhone X schematic diagram, we know that this pin is connected to the second pin of the iPhone ringtone amplifier IC through by the middle layer pin S162 of the iPhone X motherboard. So, we need to check this circuit carefully.

Carefully take out the iPhone motherboard, apply it to the iPhone X fixture holder, and then use QUICK 861DW hot air rework station to remove the upper layer.

Observe the upper layer under the Stereo Zoom Microscope, we find that there are many pins are missing on the upper layer, which including S156 pin of the NFC circuit.

According to our repair experience, we think it's because the iPhone was dropped and then it caused virtual welding and pins missing on the iPhone motherboard.

Remove tins on the solder pad and upper layer, clean the iPhone motherboard. Use digital multimeter to measure the diode data of the S162 pin and S163 pin, the data tested are normal.

Now, we know that the open circuited is caused by the virtual welding of the middle layer.

Soldering a jumper wire on the S166 pin, apply some green UV oil to it, and then use UV light lamp to solidify it. Next reball the tin on the lower layer.


At last, assemble the iPhone X, and turn on the iPhone X to test it, the speaker function works properly. The problem has been fixed!


Thursday, April 4, 2019

Troubleshoot: iPhone X failed to boot

Today, we are going to talk about iPhone X problem. This iPhone X is failed to boot,  we confirmed the iPhone display screen and iPhone battery are good, so now we need to check iPhone X motherboard. As we know, the iPhone X logic board is double layer designed, so we have to be patient and be carefully during the repair process.


Firstly, we need to tear down the iPhone X.  Use phone opening tools to disassemble the iPhone X, and then remove the iPhone dispaly screen, disconnect the battery, and then remove the iPhone X motherboard.

Now, we need to separate the folded motherboard, we can put iPhone X motherboard on the SS-T12A heating station, so we can separate the motherboard.

After separating the motherboard, we  need to measure the iPhone X upper layer logic board with DC power supply, the current is abnormal, now we confirm that the faulty is on the iPhone X upper layer.

Use digital multimeter to measure the iPhone power supply voltage of the upper layer, we found that there is no voltage value on C2771 and C2770.

Continue to measure the C2771 , it is normal. Then measure the C2770, the problem was found, the inductor L2770 is damaged.

We need to replace the damaged L2770. Attach the upper layer to the iPhone X PCB Holder, in order to protect the surrounding components for L2770, we need to stick High-Temperature Adhesive Tape in there. Use QUICK 861DW hot air rework station to remove it.

After removement, re-weld the new inductor L2770 to the motherboard, and then measure it again, now the data is normal.

Finally, install the iPhone X, and test it, the iPhone X is turned on successfully after pressing the power button, the trouble has been solved!



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