Replacing Your Phone
All of the phones sold by Cellular Express are GSM Unlocked, meaning they will work with any GSM carrier in the United States and Canada with no new contract required. To transfer over your current phone number and service, simply remove the SIM card from the back of your current phone and insert it into your new phone. In the US and Canada, AT&T, Cingular, T-Mobile, Cellular One and Rogers are the major GSM carriers.
All Phones from Cellular Express will work with AT&T, Cingular, T-Mobile, Cellular One and Rogers!
Some of the features listed for our phones are carrier dependent and may require special programming or a separate subscription. Please also ensure that the network in your area operates on the correct band. Please contact your service provider for details. For more information, please see the FAQs section below.
Carrier FAQs
Please see our FAQs page for other frequently asked questions.
What Is GSM?
GSM phones require a small electronic chip, called a SIM card, to be inserted into a slot in the handset. 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 over 320 GSM networks in over 140 countries.
Which Carriers Use GSM Phones?
In the United States, Cingular Wireless, AT&T and T-Mobile are the major GSM networks. Outside of the US, most other countries, especially in Europe and parts of Asia, exclusively use GSM phones.
The following is a full list of GSM Carriers in the United States:
AT&T
Cellular One
Centennial Wireless
Cingular
CorrComm
EDGE Wireless
Einstein PCS
Immix Wireless
NPI Wireless
Simmetry Communications
Speak Out Wireless
T-Mobile
Viaero Wireless
iWireless
What are Unlocked GSM Phones?
An Unlocked GSM phone is not locked to a particular carrier and will work with virtually any GSM service provider in the world. All you have to do to set up an Unlocked phone with your current service is simply insert your SIM card into the back of the phone. Most of the phones sold by Cellular Express are Unlocked and are guaranteed to work with Cingular, AT&T and T-Mobile in the United States along with many other carriers internationally.
How do I set my new phone up with my current service?
Setting up an Unlocked phone with your existing service and phone number is easy. All you have to do is remove the SIM card from the back of your old phone and insert it into the back of your new GSM Unlocked phone and your service, phone number and contacts will be automatically copied to the new phone and you should be able to make and receive calls immediately.
What are the different frequencies of GSM that I need?
Most of the world's GSM networks operate at 900MHz and 1800MHz. However, in order to use the networks in the USA and Canada you will need a handset that is also capable of operating at the 1900MHz frequency. Most phones are now either "dual" "tri" or "quad band" (includes 850MHz) to serve most of the world.
