The watch Only support 2G network SIM card [GSM/GPRS 850/900/1800/1900]
* Support TF card expansion
There is no APK for iPhone because it didn't open it.
Only below 7 functions can sync For iPhone: SYNC calls, Pedometer, Calendar, Stopwatch, Calculator, Alarm Clock, Music (Bluetooth)
* The smart watch need inserted into SIM card and TF Memory card. (If you want to use all the features.)
* App is installed on a mobile phone. ( Andorid APP: Mediatek SmartDevice, https://play.google.com/store/apps/details?id=com.mtk.btnotification )
* The phone can be connected with smart watch by Bluetooth.