What if i don't have a computer and cannot connect my iPhone11 to restore it
Black screen with logo flashing g periodically
iPhone 5s, iOS 12
Question marked as
A computer will not help with the condition that you are describing.
The phone has a hardware problem and needs to be serviced at an Apple Store.....make an appointment....or take the phone to an authorized Apple Service shop.
You can find a list of authorized service locations in your area by using the link just below: