Getting verification failed error while trying to update apple setting

Hello,

Can you provide more info?

This article may help:

If your iPhone, iPad, or iPod touch unexpectedly restarts - Apple Support

Hi neha,

Update your software to 11.2. This should stop the constant restart and related

If you can't on device or it doesn't resolve, update via iTunes:

https://support.apple.com/en-us/HT204204