Unable to unlock iPhone

Hello, dear support:) I really hope for your help, although we are complete strangers and compared to the problems all over the world, this problem is a grain of sand, I still look forward to your answer :)My name is Maria, I'm from Belarus, so please excuse me if my message to you contains mistakes. Let me tell you about the problem that my younger sister had. She entered the password correctly, because these are the first digits of her mobile number, which she couldn’t forget and it was easy to check.I'm talking about the fact that the password for the phone was exactly correct and the screen worked well. This means that she pressed the correct numbers, but the iPhone said that the password wasn’t correct. She has an iPhone 7. The first few times, the iPhone allowed her to unlock with a fingerprint, but then it completely blocked because we made many attempts to enter the password.Personally, I keep passwords from all my social networks in my phone notes, like my little sister, like many people :) as a result, the phone is locked, the Apple ID password is in notes ... This will be a lesson for life to store passwords elsewhere :) Tell me, the only thing the solution is to reset the phone to factory settings and try to restore the apple id?Thank you for reading this far :)

I wish you everything that you want:) Best regards, Maria

[Edited by Moderator]