Had this exact same problem: An iPhone 6 with an aftermarket screen. After upgrade to iOS 11 the touch screen didn't work - at all. Couldn't even enter the access code.
The moment for downgrade to iOS 10 has passed as Apple is no longer letting you download a signed copy of iOS 10. You can probably downgrade to iOS 10 by downloading the IPSW file from some dodgy website. But who wants do that ?
Anyway, here's what worked for me:
'''You need to do a power cycle.'''
... which is in fact not that easy to do. You would think that ''restarting'' the phone also did a power cycle (as is the case on a desktop computer), but this is not the case on an Apple phone.
The instruction for power-down procedure is almost similar to the restart procedure, but with a twist. The instruction below is on the assumption that you cannot use the screen at all. (otherwise there are easier ways to do it). Here we go:
# Hold down the Home button and the Power button simultaneously. Keep holding.
# First, the screen will go black. Keep holding.
# Then you'll see the Apple logo. Keep holding.
# Finally - after some 20-30 secs - the screen will momentarily go black again and this time you must release the buttons ''immediately''. If you miss this point the phone will go into recovery mode, where it will ask you to recover via iTunes. But if you hit the right point in time, the phone will stay powered off.
# Leave the phone powered off for at least 1 min. Then turn it back on.
After this procedure my aftermarket touch screen worked with iOS 11.
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It is yet to early for me to say if the fix is permanent or if the touch screen now works temporarily. But a full power cycle is at least worth for everyone to try before panicking.
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It is yet too early for me to say if the fix is permanent or if the touch screen now works temporarily. But a full power cycle is at least worth for everyone to try before panicking.
-
UPDATE 2 DAYS LATER:
-
Unfortunately this was not it. I believe it worked once because the phone had been completely powered down for something like 12h. I've read some reports that the chip controlling the screen on these aftermarket thingys becomes extremely hot when used with iOS 11. So it makes sense the screen will work temporarily if you leave the phone off for some time. Not a solution of course.
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'''UPDATE 2 DAYS LATER:'''
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+
Unfortunately this was not it. I believe it worked once because the phone had been completely powered down for something like 12h. I've read some reports that the chip controlling the screen on these aftermarket thingys becomes extremely hot when used with iOS 11. So it makes sense the screen will work temporarily if you leave the phone off for some time. Not a solution of course.
+
Brought it to the repair shop in the mall where I purchased the aftermarket screen. They said (11 Oct 2017) that they had had 10 people coming on that same day and all wanted a refund or a replacement. They were awaiting information from "upstream" as to what to do about it.
Had this exact same problem: An iPhone 6 with an aftermarket screen. After upgrade to iOS 11 the touch screen didn't work - at all. Couldn't even enter the access code.
The moment for downgrade to iOS 10 has passed as Apple is no longer letting you download a signed copy of iOS 10. You can probably downgrade to iOS 10 by downloading the IPSW file from some dodgy website. But who wants do that ?
Anyway, here's what worked for me:
'''You need to do a power cycle.'''
... which is in fact not that easy to do. You would think that ''restarting'' the phone also did a power cycle (as is the case on a desktop computer), but this is not the case on an Apple phone.
The instruction for power-down procedure is almost similar to the restart procedure, but with a twist. The instruction below is on the assumption that you cannot use the screen at all. (otherwise there are easier ways to do it). Here we go:
# Hold down the Home button and the Power button simultaneously. Keep holding.
# First, the screen will go black. Keep holding.
# Then you'll see the Apple logo. Keep holding.
# Finally - after some 20-30 secs - the screen will momentarily go black again and this time you must release the buttons ''immediately''. If you miss this point the phone will go into recovery mode, where it will ask you to recover via iTunes. But if you hit the right point in time, the phone will stay powered off.
# Leave the phone powered off for at least 1 min. Then turn it back on.
After this procedure my aftermarket touch screen worked with iOS 11.
It is yet to early for me to say if the fix is permanent or if the touch screen now works temporarily. But a full power cycle is at least worth for everyone to try before panicking.
+
+
UPDATE 2 DAYS LATER:
+
Unfortunately this was not it. I believe it worked once because the phone had been completely powered down for something like 12h. I've read some reports that the chip controlling the screen on these aftermarket thingys becomes extremely hot when used with iOS 11. So it makes sense the screen will work temporarily if you leave the phone off for some time. Not a solution of course.
+
Brought it to the repair shop in the mall where I purchased the aftermarket screen. They said (11 Oct 2017) that they had had 10 people coming on that same day and all wanted a refund or a replacement. They were awaiting information from "upstream" as to what to do about it.
Had this exact same problem: An iPhone 6 with an aftermarket screen. After upgrade to iOS 11 the touch screen didn't work - at all. Couldn't even enter the access code.
The moment for downgrade to iOS 10 has passed as Apple is no longer letting you download a signed copy of iOS 10. You can probably downgrade to iOS 10 by downloading the IPSW file from some dodgy website. But who wants do that ?
Anyway, here's what worked for me:
'''You need to do a power cycle.'''
... which is in fact not that easy to do. You would think that ''restarting'' the phone also did a power cycle (as is the case on a desktop computer), but this is not the case on an Apple phone.
The instruction for power-down procedure is almost similar to the restart procedure, but with a twist. The instruction below is on the assumption that you cannot use the screen at all. (otherwise there are easier ways to do it). Here we go:
# Hold down the Home button and the Power button simultaneously. Keep holding.
# First, the screen will go black. Keep holding.
# Then you'll see the Apple logo. Keep holding.
# Finally - after some 20-30 secs - the screen will momentarily go black again and this time you must release the buttons ''immediately''. If you miss this point the phone will go into recovery mode, where it will ask you to recover via iTunes. But if you hit the right point in time, the phone will stay powered off.
# Leave the phone powered off for at least 1 min. Then turn it back on.
After this procedure my aftermarket touch screen worked with iOS 11.
It is yet to early for me to say if the fix is permanent or if the touch screen now works temporarily. But a full power cycle is at least worth for everyone to try before panicking.