How to fix iphone keeps restarting every a few minutes after update

An iPhone that continuously restarts, often called a boot loop, is usually caused by a software glitch, but it can also point to a hardware issue like a failing battery. The good news is that most software-related causes can be fixed at home. You can try this trick to fix iPhone continuously restarting.

This is the first thing to try. A force restart interrupts the power cycle and clears minor software conflicts without erasing any data.  This is why you should try when iPhone keeps restarting.

The button combination depends on your iPhone model:

iPhone 8 or later (including SE 2nd/3rd gen): Press and quickly release Volume Up, then press and quickly release Volume Down. Finally, press and hold the Side button until you see the Apple logo, then release.

iPhone 7 or 7 Plus: Press and hold both the Volume Down button and the Side button simultaneously until the Apple logo appears.

iPhone 6s or earlier (including SE 1st gen): Press and hold both the Home button and the Top (or Side) button simultaneously until the Apple logo appears.

Usually, a force reboot will help you get out of iPhone a restart loop.