Chosen Solution

My iPhone 6s is turning its self off when the phone is locked. It’s only doing it when the screen lock comes or I press the side button and the phone won’t come back on 90% of the time. To get the phone back on I’m having to hard reset and sometimes that is even hit and miss and takes a few attempts. I found out if I run a podcast or Apple Music in the background and lock it or screen lock comes on the phone is like normal. I’ve tried setting up from new and back up and still having the same problems.

Did this happen recently after a screen replacement? Usually this issue only occurs on defective screens.