What are Unlocked Gsm Cell Phones?

Unlocked Cell Phones

Gsm Logo Unlocked Cell Phones also Called: Gsm Unlocked Cell phones. TDMA Unlocked, sim Unlocked, Unlocked Cellular, Unlocked Mobile or simply Unlocked phones. These names refer to the same Gsm Based technology which uses SIM cards.

Unlocked cell phones are used with GSM carriers around the world. These unlocked cell phones use SIM cards. In the United States unlocked cell phones can be used with At&T (formally Cingular), T-Mobile, Cellular One and other GSM Carriers.

The Two types of Unlocked Cell Phones:

1: Original Equipment Manufacturer (OEM) unlocked cell phones:

OEM unlocked cell phones comes directly from the manufacturer. These Unlocked cell phones have never been assigned to any service provider/carrier. OEM Unlocked Cell Phones come in the manufacturer's original packaging. They don't have any service provider/carrier logos or customization (Internet/MMS settings) These. OEM Unlocked Cell Phones can be configured for Internet/MMS settings with any service provider/carrier. OEM unlocked cell phones have warranties from the country in which they were manufactured. Major OEM unlocked cell phone manufacturer's are Motorola, Nokia, Sony Ericsson, Samsung, LG and Siemens. Most If not all unlocked cell phones are manufacutred in Europe or Asia.

2: Carrier/Operator Unlocked Cell Phones

Carrier unlocked cell phones were originally locked to a specific service provider (i.e AT&T Wireless, T Mobile or Cellular One) Then were unlocked. These unlocked cell phones usually have a carrier/operator customization in the menus and carrier logos; They can't be configured for Internet/MMS settings with any other carriers/provider. Carrier/Operator unlocked cell phones carries local warranty of the country in which the carrier with whom they was originally locked operates.

Unlocked Cell Phone Manufacturers include: Motorola, Nokia, Samsung, Sony Ericsson, LG, HTC, Blackberry, I-mate, NEC, Panasonic.

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