How to turn on your iPhone from the Apple logo
How do I turn on my iPhone that acts like it’s going to turn on from the Apple logo but goes to a blank screen??
Question marked as
Frozen phone or Logo Bootloop
see the process below, using the Update option if possible.
Work all through it. There are several stages.
If your iPhone, iPad, or iPod touch won't turn on or is frozen - Apple Support
There is no guarantee you can save any data since your last backup if you need to use the Restore option.
If this fails more than once the phone is in need of serious repairs.
https://support.apple.com/iphone/repair/service