The Phone supports two GSM SIM at a time. If there is a call on one SIM then second SIM will be inactive during the call and vice versa. Kphone1 come with strong 1400mAh battery which make your entertainment lasts long. Kphone1 comes with FM radio where you can automatically search and save up to 30 channels. More over you can record your favorite tracks via FM and store in your Memory card. Access internet through GPRS connectivity support. Get Connected with your loved ones anytime you want.Send & Receive MMS too. Share files and tracks via BT to other devices. Connect your K-phone 1 with your favorite headsets / external speakers as it comes with Universal 3.5 mm Audio Jack.