AT&T Cingular Used Unlocked Cell Phones

Refurbished Cingular Cell Phones – Unlocked Cell Phones at an Affordable Price

Learn about frequently asked questions for our used Cingular phones below.

*These used Cingular phones require GSM phone service – A SIM card is not provided.

What is GSM? GSM is short for global Systems for Mobile Communications – a system developed that employs the use of narrow band TDMA to deliver digital wireless service. Cingular, T Mobile and AT&T GSM phones require a small electronics chip, called a SIM card, to be inserted into a slot in the phone. This international SIM card is the heart of your phone—it contains your cell phone number, your phone book, and all of your registration information. Most companies with GSM service provide you access to more than 320 GSM networks in over 140 countries.

What are unlocked cell phones? These refurbished Cingular cell phones are either 1) phones which are directly from the manufacturer which have never been locked to a specific carrier, or 2) phones from a carrier which have been modified to openly work on any network.