Dual sim, dual standby One key answer Lost alarm Privacy protectection Selfie control Before using, kindly confirm below issues: 1. Your iOS devicesâ Bluetooth Standard is Bluetooth 4.0. (i Phone 5+) 2. Your devicesâ iOS version is 7.0+. 3. Your devicesâ Bluetooth is turned ON. 4. You have access to Apple App Store, with internet connection (GPRS, 3G, 4G, Wifi) and your Apple ID. 5. This AppPhone supports GSM band only, for phone call & SMS. Do not support network data. Type in "morecard" in APP store, and search for "MoreCard" APP to install on your device. (Note: On iPad, please switch to iPhone APP searching menu) Note: This is a smart Bluetooth gadget, connecting to mobile phone with dedicated APP, it enables Single SIM card mobile to be Dual SIM, for phone calls and SMS operations. It supports GSM network, but not CDMA. For CDMA users, you can insert your CDMA SIM to your CDMA mobile, then insert another GSM SIM to this APP PHONE.