Follow these steps to switch your iPhone off and on again: This only takes a few minutes, and if it fixes the problem, it'll save you a lot of other troubleshooting. The iCloud login loop bug can be caused by a faulty Wi-Fi connection, and the easiest way to fix it is to power down the iPhone and power it back up again. In this feature we have five different fixes for the iCloud login loop.
Having an iPhone that is stuck in the iCloud login loop can be extremely frustrating. Even when you enter your Apple ID, and password, it quickly asks for it again (and again, and again). Sometimes an iPhone gets into a loop of continuously asking for your iCloud login details and password. This is an old bug, but one that we keep seeing. Why does my iPhone keep asking for my iCloud login?