GSM Means - Global System for Mobile Communications

Unlocked GSM cell phones use a SIM card. The SIM card is issued by a carrier and provides cell service by activating any phone into which it is inserted.

Unlocked GSM devices are cell phones that recognize SIM cards from any carrier such as T-Mobile, AT&T, Simple Mobile, H2o, and any GSM carrier.

A locked cell phone benefits only the carrier by keeping a customer using their service.

Unlocked phones will give consumers more control over plans, pricing, and services and make carriers work for you.

Unlocked phones sold directly by the manufacturer are un-altered by the carrier, and don’t have any altered software or missing hardware.

Yes, Unlocked phones gives you the freedom to travel without paying for roaming. With an unlocked phone you can purchase a pre-paid SIM card in the foreign country when you are visiting, and pay local rates for local phone calls.