A. 1. Check unlocking eligibility: Visit the AT&T website to see if your phone is eligible for unlocking and follow the provided instructions. 2. Use a local SIM: If you travel frequently, consider purchasing a phone that is already unlocked for use with different carriers.

B. 3. Research unlocking services: If your phone is not eligible for unlocking through AT&T, look for reputable third-party services that can assist.