Hello Kitty Phones




The term is used for Global System for Mobile Communication. It is a worldwide accepted cellular network standard which uses a SIM (Subscriber Identification Module) card to make and receive calls and data over the network. The SIM card holds the phone number assigned by the service provider, your phonebook and other registration information. GSM standard is used by approximately 213 countries with over 3 billion people. GSM network uses four frequency range 850 MHz, 900 MHz, 1800 MHz and 1900 MHz.

Dual-Band Phones

Frequency Operation Mode: 900/1800 MHz.
Countries: Europe, Africa, Asia, Australia, New Zealand and much of South America.
These phones will work around the world but not in United States and Canada.

Tri-band Phones

Frequency Operation Mode: 900/1800/1900 MHz.
Countries: Europe, Africa, Asia, United States, Canada, Australia and New Zealand.

Frequency Operation Mode: 850/900/1800/1900 MHz.
Countries: Europe, Africa, Asia, United States, Australia, New Zealand, South America and almost all the countries. Quad band phones will work all over the world with all GSM service providers.

More information

Here you can see the full compatibility list for your phone carrier in your country: http://www.gsmworld.com/roaming/gsminfo/index.shtml