My password won't open my phone. What do I do?

[iMore Question]

I did not change my password and now my phone won't accept it!

 

[nikkisharif]

You have to erase your device & start over. Hopefully you have a backup that you can restore from.

https://support.apple.com/en-us/HT204306

 

[wijnaldumwilliam]

There are a few things which could be happening here. First, make sure that you don't have Caps Lock or Num Lock enabled when typing your password – unless, of course, you had either in effect when you originally typed your password.
It's also possible there's a physical problem with your keyboard, so the password you are trying to type may not be what's actually being entered into Windows. Try booting up the laptop with an external keyboard plugged in to see whether you can type in your password on that keyboard.