I've been constantly reminded to upgrade to iOS 10.2.1 for a while now. Every time it's come up I've clicked later as I didn't want to install it. This morning the message popped up again so I clicked later expecting it to disappear. Instead the phone crashes and then loads back up to the home screen. Before I can unlock the phone the message pops up again so I click later and it crashes again. I tried it one more time but the same thing happened so I tried turning the phone off. Once I powered down the phone it then decided to install the update! All I'm gonna say is it was a good job I didn't need the phone for an emergency as it was stuck updating for around 15 minutes. Has this happened to anyone else?