Please pay attention to the band of cellphone,some kinds of cellphone 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 qualband 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.