What's up Community! The Sammies are back to offer suggestions and advice on non-responsive devices. Without any further ado...I present to you...THE SAMMIES!!!
This is for galaxy what about iphones
For iPhones, you perform a simulated battery pull by pressing and holding the Power (top edge) and Home button (bottom) until the Apple logo appears (at least 10 seconds but could take longer) then release.
Always check what is on the screen. Screen protectors can cover sensors. Class 10 SD cards are irrelevant because iPhones do not use SD cards.