With Dual SIM phone slide the the second SIM into the SIM slot 2. Both SIM Cards are available at the same time when the device is not being used but while one SIM Card is active, for example, making a call, the other may be unavailable. Used Battery BL-5CB rechargeable battery. Micro type charger, always switch the device off and unplug the charger before removing the battery, support bluetooth and Radio mode