What specific is your iPhone currently stuck on?
White screen of death or black screen with a spinning circle.
Put your iPhone into (the button combination depends on your iPhone model).
A hard reboot clears temporary system memory caches and can instantly resolve minor boot loops without requiring a computer.
If your iPhone is stuck on the Apple logo, trapped in a boot loop, or displaying a black screen, you might have come across [1]. This system recovery tool claims to repair over 50 different iOS issues without data loss [1].