how do I get my password to go in on my phone ?

[AC Question]

okay so last night i was on my phone & everything was normal and working , i switched my phone off when i went to bed & switched it back on the next day . when i switched it back on I had a different wallpaper on my phone the wallpaper is one of the phone's wallpapers that you get on the phone but i didn't still take note of it so i punched in my password and it said " incorrect password " i punched it more than 10 times in and it doesnt work ! i didnt understand how & why cause nobody has my password or knows my password , now is my phone hacked ? has someone got into it from a another place ? i'm struggling all day to get my password in but it still don't work ... can someone please tell me what i can do ? i'm really desprite & need the help . btw I'm using a Tab Mobicel .

 

[Rukbat]

Something went wrong - probably with the ROM. Bring the phone to your carrier - with a photo ID showing that you own the account - and ask for help.