Generally, there are three common reasons that can result in i Phone 8 keeping restarting: poor battery connection, jailbreak and i OS upgrading.Here are top five effective ways to fix i Phone 8/8 Plus stuck in bootloop.
Apple changed the activation screen in i OS5 and i OS6, however, this tutorial works for all i OS versions mentioned. If you don’t know what version your i Phone is on, watch the video and it will tell you.
The signing window for i OS 10.3.1 could close any moment now, with i OS 10.3.2 released and i OS 10.3.3 in beta already, so this is your last chance to save your blobs for i OS 10.3.1, to upgrade to it from a lower firmware, or to downgrade to it from i OS 10.3.2 .i OS 10.3.1 isn’t currently jailbroken, and being on that firmware is in no way a guarantee of a jailbreak.
However, you never know what’ll happen, and there have been some stirrings, so act now! Bugs are patched with every i OS release, and jailbreak tools do not generally support the current firmware anymore.
These methods are applicable for i Phone 6/6 Plus/6s/6s Plus/7/7 Plus/X or i Pad Pro/Air/Mini as well. Remove the two screws on two sides of the charging port. Put everything back and reboot your i Phone 8/8 Plus to see if your problem is fixed.
The first thing came to our mind is the malfunctioned battery connection when i Phone 8 keeps rebooting. It works for both jailbroken and non-jailbroken i Phone 8/8 Plus. Slightly lift up the screen and the body of i Phone 8/8 Plus. Remove the two screws that connect the battery connector to battery retaining bracket. If your i Phone 8 keeps restarting, you can try to fix it by force rebooting your device.