Solution: Drop-damaged iPhone 6S Plus poor WIFI signal

 Here is an drop-damaged iPhone 6S Plus with poor WIFI signal problem, we need a solution for this problem. 

Trouble phenomenon

This iPhone 6S Plus accidentally fell into the ground, luckily the iPhone 6SP still can turn on, but unfortunately we found the iPhone WIFI signal is abnormal, the signal is very poor, which causes iPhone WIFI function can't  used normally.

Solution

First, disassemble the iPhone 6SP by phone opening tools, open the iPhone display assembly, take out the iPhone motherboard. 

Now, we need to check iPhone WIFI IC, so fix iPhone motherboard by PCB holder fixture, use QUICK 861DW hot air rework station to heat the iPhone WIFI IC, and then use tweezers to remove the iPhone WIFI IC.

Observe it under the microscope, we found there are many pin are missing, and most of them are useful pins.

Because replace iPhone 6S WIFI need to unbound the WIFI on the iPhone Nand flash, otherwise, the iPhone WIFI function can't be used.

Now, remove the iPhone Nand flash, and then put iPhone Nand flash on the JC Pro1000S chip programmer to unbound the WIFI, and then re-install the iPhone Nand flash.

After handling the iPhone Nand flash, we are starting to handle the solder pad, solder the jumper wire and fill the missing pins, re-fill all of the useful pins, and then install the new iPhone WIFI IC. 

Measuring the data of iPhone motherboard, all data tested are normal. Install the iPhone 6S Plus and turn it on, after entering the IOS system, test the iPhone WIFI function, now it works properly.