no N button and weird phone screen HELP????

[kermit5327]

ok so i was just sittin on my couch texting some ppl and when i exited out of messaging i see this screen

so i tried to exit out of the screen and it wont let me it just keeps coming right back up. so i went ahead and did a soft reset on the phone that didnt work. so i did a master reset and when the screen came up to enter in the time zone, date, and time. in the time zone box it started filling up with n's well i just clicked next and it went back to the same phone screen. so i left my phone alone for a while and it went into stand by untill i got a call i answered it and then i pressed the X and it went to my today screen but my N button still wont work on the keypad