GSM Unlocked Mobile Phones are Unlocked GSM Phones which can be used with Any GSM Wireless Network Anywhere in the World. 

The Term Unlocked is meant for Cellular Phones which have not been subsidized and Locked by any Wireless Services Provider, therefore, unlocked phones can work with any GSM Wireless Service anywhere in the World. 

GSM is a Wireless Platform and the technology that carries the signal back and forth from the phone to the receiver (Receiving Towers). 

Unlocked GSM Phones will only work on GSM Platform that means that your Wireless Service Provider has to be a GSM Service Provider. In the USA, T-Mobile, Cingular GSM and AT&T Digital GSM are the popular companies that use GSM Technology to provide Wireless Services to their end users.

SIM Card, also called the Smart Card is a small chip that contains your wireless service account information. You can insert the SIM Card into any unlocked GSM phone and instantly transfer your phone number and account to the new phone. If the Phone is locked, it may not accept your SIM Card.

Tri Band is a Term used for Phones that will work with 900/1800/1900 MHz Frequencies.

The Popular Frequency in USA is 1900 MHz. 

In Europe, Australia, Asia and Africa, the popular frequencies range between 900-1800 MHz.

South America and the Caribbean's have a mix of 1900 along with 900/1800 MHz. 

A Good source to check for what frequency Maps in a certain region is the web site by GSM association. Click here to see the Maps. 

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Most mobile phones sold on our web site have the following common features:

• Dual SIM
• Camera
• Internal Flash Card
• Bluetooth
• FM Radio
• Base booster
• Marquee lights

• Microsoft Windows CE based
• WiFi
• GPS

The 3rd thing you want to consider is the external shape of the phone. We offer the following types of phone shapes and operation modes:

• iPhone like touch screen
• Slide Open Design
• Fold over Design
• Streight

Dual SIM is a Term used for Phones that has two SIM sockets and allow the phone to work with both SIMs so a single phone will have two phone numbers.

Single Standby is a Term used for Phones that supports multiple SIM sockets and allow the phone to work with one SIM at a time and user can select which SIM to be active and switch to the selected SIM so making and answering calls can be done for the active SIM.

Dual Standby is a Term used for Phones that supports multiple SIM sockets and allow the phone to work with both SIMs at the same time. Both SIMs are active to receive and make calls. No need to manually switch between SIMS. But you can only make and receive call from one SIM at a time. For example, when there is a incoming call for one of the SIMs and you pick up the call, you will not be able to make or receive calls for the second SIM until the call activities are stopped for the first SIM. In other words, call making and answering is not duplex.

Dual Receiving is a Term used for Phones that supports multiple SIM sockets and allow the phone to work with both SIMs at the same time. Both SIMs are active to receive and make calls. No need to manually switch between SIMS. You can only make and receive call from both SIM at the same time. For example, when there is a incoming call for one of the SIMs and you pick up the call, you will be able to make or receive calls for the second SIM. Call receiving and answering is fully duplex.