I have a 5 digit passcode since I have an exchange email account. This is fine except if I ever enter an incorrect code or if I accidentally push emergency call in the middle of entering passcode- even once- any additional tries will tell me "incorrect passcode" even when I know I punched in the right code. I will then have to reset my phone and enter my passcode again and it works. It's annoying because sometimes I have to reset my phone a few times a day because I entered wrong codes. Is there anything I can do to prevent this error by my iphone?