Iphone 6s Touch Screen Unresponsive Fix - VIP Pro Shop Team

In this article will show you a quick fix for an unresponsive iPhone 6S screen. Try this only after you have tried all other standard troubleshooting (Restart, Reset, Restore).  This method is for situations where your screen just stopped responding ON ITS OWN, not for dropped/cracked screens or liquid damaged iPhones.  This is just a temporary fix that should allow you to use your iPhone until you can get a permanant repair or replacement. As expected, VIP Pro Shop Team just announced a discounted repair program for this exact issue. Read the following maintenance steps and details.



Fault Phenomenon:

It can boot properly, but no touch function.

Repair Process:

The touch circuits of iPhone 6S and iPhone 6 are different, the touch IC  of iPhone 6S integrated on display screen. However, their working principle is the same and the repair method still the same. Use multimeter to measure the touch interface, it shows 1.8V touch power supply which is normal state. As shown in picture 4-9-1.



Measurement shows touch interface +5.7V power supply, it is normal. As shown in picture 4-9-2.




Measurement shows touch interface -5.7V power supply, it is normal. As shown in picture 4-9-3.




After measurement, we can find that all work voltages are normal. Now, we start to measure the diode data of SPI line on display touch interface, all around 360, as shown in picture 4-9-4.This is the normal range. 



When measure the interrupt signal from display screen of display touch interface to the application CPU, we find that the diode data of interrupt signal is infinite, which indicates that there is disconnected from display touch interface to application CPU. As shown in picture 4-9-5.



This kind of disconnect fault in phone maintenance is basically caused by the application of CPU virtual welding, so we remove the CPU and reinstall it. Then power on iPhone 6S and test touch function, its back to normal, the iPhone 6S failure has been repaired.


Tips: If you’d like to know more about the preferential iphone repair tool maintenance please read on www.vipprogrammer.com. all of these phone repair tools, and you can find it.



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