The account number is NOT the phone number. It is the phone's MEID or IMEI serial number (located on the back of the phone, under the battery, so remove the battery!) If you're using a BYOP SIM Card, it'll be the final 15 digits of your SIM card number. In the My Account area of the Telcel America website, click 'Add(or Edit) Nickname' to view the account number.On your online Telcel America My Account page, select Update Personal Profile and look for Current Security PIN to find your passcode. If that area is empty, make sure to create a passcode PIN before migrating.