in case you’ve forcibly rebooted the iPhone 7, you’ve restored the iPhone 7 from a backup, you’ve set up the iPhone 7 as new, and you’ve got repaired the broken screen and lcd, and the contact display screen continues to be unresponsive, it’s time to exchange your wondering and look for a completely extraordinary answer.Rewatechnology.com here presents you a refreshing logic board solution regarding to the unresponsive touchscreen issue of iPhone 7.

1. Phone 7 Disassembling

Remove charging port screws and detach the display assembly.Disconnect flex cables and remove logic board screws.Take out the logic board.

Repair iPhone 7 Touch Screen

2.Iphone 7 Malfunction Diagnosing

Roll out the maintenance drawing for reference.

iPhone 7 Touch Screen not working

Test resistance of the display assembly connector with digital multimeter.
Repair iPhone 7 Touch Screen

Pin 10 worked as AP_TO _TOUCH _MAMBA _CONN _L signal. The signal was connected with CPU AT2 pin via inductor FL3904.

Repair iPhone 7 Touch Screen

Circuit between pin 10 and inductor FL3904 displays normally.

Repair iPhone 7 Touch Screen

Test resistance from inductor FL3904 to CPU, the device displays normal value. Then we can draw the conclusion that inductor FL3904 was damaged.

Repair iPhone 7 Touch Screen

3. IPhone 7 Malfunction Repairing

(1)Take down the inductor with soldering iron.

Repair iPhone 7 Touch Screen

(2)Solder tins on the copper wire. After that, connect the two bonding pads of the inductor with the copper wire. Then cut off the rest of it with a sculpture knife.

Repair iPhone 7 Touch Screen

(3)Test pin 10 resistance with digital multimeter again, this time we get a normal value, which means the problem has been fixed.

Repair iPhone 7 Touch Screen

4. IPhone 7 Touch Screen Function Testing

Clean the bonding pad with PCB cleaner.Assemble the phone and test.Touch function back to normal

Repair iPhone 7 Touch Screen

Rewatechnology now grows to be a professional sourcing solution provider in this dynamic changing cell phone industry. We have years of experience on providing wholesale services upon an extensive range of spare parts such as mobile phone display,  cell phone parts,  iPhone PartsSamsung Parts,macbook parts etc, as well as accessories, repair tools and materials. From customers’ perspective, REWA deeply understands the importance of the logistics supply of spare parts and services for repairing and refurbishing business. Therefore, we have long been striving to provide reliable, hassle-free services and top-level solutions to different customers including Refurbishing Factories, Wholesalers & Distributors, Online Resellers and Repair Facilities.

My email is: market@rewatechnology.com. If there are any questions or requirements, please do not hesitate to contact me .thank you