It is not a good news for DIY repairers or in general common repair shops that iphone 7 and 7 plus home button repair solution is not available to them. Back in 2013 when the iphone 5s was released with touch id and on later models of iphone upto 6s if the home button is damaged you can still replace the home button only the touch id will not work but taking back to menu or home still works normally. But on iphone 7 and 7 plus if original home button is damaged or goes unresponsive during lcd replacement it will not work at all. That means no touch id or no click or going back to previous menu. The iphone repair shops technicians those were used to replace home button just clipping in new one are out of this repair now. The reason behind iphone 7 and 7 plus home button not replaceable with another one because it has a software lock where the U10 ic on the home button itself which communicate to processor or apple server. Read some question and answers here
So far we have find two types or faults on iphone 7 home button stops working after screen replacement. Number one is the damage on the bent part of the cable by connectors. See in the below picture
Second type of repair which we have done successfully is replacing U10 ic on the home button assembly. The way back communication to the processor or logic board from iphone 7 and 7 plus home button is controlled by u10 ic which is mounted on the home button assembly. This ic is not easy to replace as it is mounted on to the flex cable not on hard pcb. To remove u10 ic from home button we use a special tool see below picture.
why iphone 7 and 7 plus home button does not work after screen replacement?
So far we have find two types or faults on iphone 7 home button stops working after screen replacement. Number one is the damage on the bent part of the cable by connectors. See in the below pictureSecond type of repair which we have done successfully is replacing U10 ic on the home button assembly. The way back communication to the processor or logic board from iphone 7 and 7 plus home button is controlled by u10 ic which is mounted on the home button assembly. This ic is not easy to replace as it is mounted on to the flex cable not on hard pcb. To remove u10 ic from home button we use a special tool see below picture.
read further here http://www.applefix.co.nz/blog/iphone-7-and-7-plus-home-button-repair-solution/
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