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3 steps to fix iPhone 6 Plus touch screen unresponsive and show white vertical lines

The iPhone 6 Plus was dropped, and its touch screen does not respond like it should be sometimes and display the white stripes. How can i fix it? Just follow the following methods

First, power on and test it. IPhone 6 Plus touch screen sometimes responds while sometimes not. And the white stripes appear on screen. This kind of problem is common in iPhone 6 Plus. The dropped iPhone 6 Plus is very likely to have such problems, as shown in picture 1-1.
1-1

Second, find out the reason. The reason is that the pin M1 of touch process chip U2402 almost disconnects. The pin M1 is used by synchronizing signal to communicate between LCD and touch screen control chip. If the synchronizing signal does not synchronize normally, the touch screen will not respond. Remove the touch process chip directly, finding pin M1 has been taken down along with the touch process chip, as shown in picture 1-2.
1-2

Finally, solve the problem. After knowing the problem, it is much easy to repair. Solder a Jumperwire at the original joint of pin M1, as shown in picture 1-3. After the wire is done, solder the touch process chip U2402. Turn on iPhone and get into test on IOS. The touch screen can respond now and the iPhone can back to normal work.
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