My phone locked accidentally, how can I unlock it as em confused about what password i have set?

[Sadia Rahat]

hello..
i have huawei honor 3c.. My phone locked accidentally and i am confused about the password i have set in actual.. the battery doctor service send me an email with three digit password while, there is no room for three digit password.. i just remember that i have set a four digit password.. i don't know what to do.. please help me..

 

[dpham00]

I would use Android device manager to lock the phone with your google password.