You'll need your AT&T Wireless transfer PIN to keep your old number when switching from AT&T to another carrier. You don't need this number when you change your phone number with AT&T. This guide ...

While I can’t say I’ve ever forgotten the password or PIN for my phone, I totally get how it’s possible. People forget things. It happens. While I can’t say I’ve ever forgotten the password or PIN for ...

Sprint requires customers to use a PIN (personal identification number) for account security. The PIN is 6-10 characters and allows Sprint to confirm customer identification. It's required each time ...