Unlocked Gsm Phones

Unlocked GSM Cell Phones

Executive summary about Unlocked GSM by Dhaval Suthar

This is done by the service providers to protect their own business. In another scenario, the user may grow dissatisfied with the quality of the service and/ or the rates of the service provider. But in order to change the service provider he/ she has to give up the phone.

Several GSM phones are dedicatedly built for specific service providers. Some phones can be unlocked by feeding into them a secret code. This code is usually unique to the phone and based upon its IMEI number and the service provider that locked it. Some phones are programmed to work only with a certain service provider. In such cases the phone's operating system software needs to be reprogrammed to unlock it. The easiest way out is to go and buy an unlocked phone!

Buyers Guide For Unlocked GSM Cell Phones
Executive summary about Unlocked GSM by Wasim Rangoonwala

GSM network uses four frequency range 850 MHz, 900 MHz, 1800 MHz and 1900 MHz.

Dual-band:

Frequency Operation Mode: 900 MHz and 1800 MHz.

Tri-band

These phones will work around the world including United States and Canada but will not work with the service provider that only supports 850 MHz frequency.

Frequency Operation Mode: 900 MHz, 1800 MHz and 1900 MHz.

Quad-band

Quad band phones will work all over the world with all GSM service providers.

Frequency Operation Mode: 850 MHz, 900 MHz, 1800 MHz and 1900 MHz.

Countries: Europe, Africa, Asia, United States, Australia, New Zealand, South America and almost all the countries.

United States support 850 MHz and 1900 MHz frequency band. What is Unlocked GSM Cell Phones?

Most cell phones service provider companies such as T-Mobile, Cingular etc provide cell phones to users which are network locked.

Please check out my other guide on LG Mobile Phones.

GSM Phones

Go For GSM Phones!

By Eddy Chandra

Global System for Mobile Communication (GSM) is a latest advancement in today's mobile technology. The network identifies the mobile, its number and provides a mobile connectivity through antennas. Integrated voice mail
High speed data
Fax functionality
Call privacy
Secure communications
Paging
Short Message Services (SMS) etc.

GSM phones allow a better network transmission speed due to the faster technology. Mostly all GSM handsets will be locked by the service provider and therefore you could not obtain the service of the next provider. A multi-band GSM mobile offers some flexibility to choose the frequency to connect.

GSM mobile phone is designed with feature-rich technology included with fax capability and SMS. The GSM mobile phones are upgraded with EDGE protocol, for speed network connections. Getting a GSM enabled mobile is easy one. There are 4 GSM frequency bands namely 850, 900, 1800, 1900 MHz. Get a new GPS enabled handset with good condition.

Buyers Guide For Unlocked GSM Cell Phones
By Wasim Rangoonwala

GSM network uses four frequency range 850 MHz, 900 MHz, 1800 MHz and 1900 MHz.

Dual-band:

Frequency Operation Mode: 900 MHz and 1800 MHz.

Tri-band

These phones will work around the world including United States and Canada but will not work with the service provider that only supports 850 MHz frequency.

Frequency Operation Mode: 900 MHz, 1800 MHz and 1900 MHz.

Quad-band

Quad band phones will work all over the world with all GSM service providers.

Frequency Operation Mode: 850 MHz, 900 MHz, 1800 MHz and 1900 MHz.

Countries: Europe, Africa, Asia, United States, Australia, New Zealand, South America and almost all the countries.

United States support 850 MHz and 1900 MHz frequency band. What is Unlocked GSM Cell Phones?

Most cell phones service provider companies such as T-Mobile, Cingular etc provide cell phones to users which are network locked.

Pls find my other guide on cell unlocked.