For some reason, I changed my keyboard to Greek, yet my password is in English. I am unable to enter the password to unlock the phone. I can't pair with Bluetooth without unlocking, and there is no option to change the language of the keyboard. Any help is greatly appreciated.
Use android device manager to get past your password, then you will be able to access menus and change the language.
You can Hack the screenlock password by typing this from terminal:
$ adb shell $ rm /data/system/gesture.key