I got a Alcatel Pixi 3 mobile and it is locked to EE. I have a 16 digit NCK code from an online supplier and have put the code in the phone but it came up error. Now I have two of these phones and the one I tried the code in and got error I cannot seem to get back to the enter code screen. The other phone when I put in the sim gives the input code to unlock screen How do you get to the unlock screen ??