Chosen Solution
My phone works fine on ios 11.4.1 but when i update to ios 12 i found when i click lock button it wont come on means calls are receiving but i cnt see anything… after reboot it is ok but after when i click lock button it happens again… plx find me a solution.?
You may have run into a bug with iOS 12! Remember, iOS 12 is still in it’s early stages, and there are bound to be bugs and issues. Frankly I would just stick with iOS 11.4.1 until November-December wish and then try again. I would downgrade as soon as possible with the guide below because Apple could stop signing iOS 11.4.1 any day now and when Apple stops signing an OS it is impossible to downgrade to an unsigned OS. Hopefully it is just a software issue and the bug is patched after a while. https://www.wikihow.com/Downgrade-iOS
