To transfer your AT&T Wireless mobile number to Optimum Mobile, you need to request a Number Transfer PIN. There are several ways to request a PIN:
From your mobile device
Call *PORT (*7678). Follow the prompts to get your Number Transfer PIN sent to you via text You'll need your wireless passcode to complete your request.
From the myAT&T app
1. Sign in to myATT.
2. Go to your profile and select People & Permissions.
3. Scroll to Transfer phone number and select Request a new PIN. Your Number Transfer PIN will display on the screen.
From myAT&T website
1. Go to your myAT&T profile.
2. Choose People & Permissions.
3. Select Wireless.
4. Scroll to Transfer phone number and select Request a new PIN. Your Number Transfer PIN will display on the screen.
If you are not able to get a Number Transfer PIN using any of the above options, contact AT&T.