1.The watch Only support 2G network SIM card [GSM/GPRS 850/900/1800/1900]
2.There is no APK for iPhone, so four functions can't sync with iphone(1. Anti-lost, 2. Messaging, 3. Notifier, 4. Remote Camera), but all other function can use normally because no need to use app.
3.Android Phone can support all function in the description.
4.We have 2 kinds of system of watch interface, but the all function is same,we will sent by random. the pictures is just a Reference.