Please pay attention to the band of cell phone, some kinds of cellphones may can not be used in your country.The band
means the frequency that cellphone support.

US  & Canada  support GSM 850mHz/1900mHz
Europe            support GSM 900mHz/1800mHz
Australia          support GSM 900mHz/1800mHz
Southeast Asia support GSM 900mHz/1800mHz

IF you are in US, please do not choose dualband cellphone GSM 900mHz/1800mHz,It will can not be used in US.You can choose triband ones:900/1800/1900 MHz or quadband ones.

If you are not sure about the frequency your sim card support, please ask some information the sim card carrier,or you can contact us.