E-Passion Gear S Bluetooth Smart Watch WristWatch Sim insert anti-lost Call reminder Phone Mate (Black) Single Micro SIM Card Lasts multiple days on a single battery charge 1.56" TFT LCD Touch Screen 240*240 pixels 0.3M Camera, Video Recording Support Bluetooth Dialer, Call Reminder, Bluetooth Call,Bluetooth SMS/IM Message Notifier Pedometer, Sleep Monitor, Sedentary Reminder, Remote Camera,Calendar (Synchronizable) This watch can also work with iPhone as a Bluetooth device(Means you can receive a call or make a call also sync your contacts to this watch via bluetooth).But Some functions like Notification Push,Remote capture,Anti-lost are currently unavailable on iOS because the iOS app is unavailable now Use as Bluetooth Device When you connect the Gear S (also refred to as Gear S) to yur mobile dvice, you can use the Gear S to view calogs or set alrms. You can use mobile dvices more convenitly by conecting to various aplications withe Gear Set your exercise gland monitor the date on the Gear S. For Androidevices, instal BTNotifcation on the mobile dvice to conect your Gear S to a mobile device. For IOS mobile dvice, the Gear S works a Bluetooth device. Turn o Bluetoh on both mobile device and the Gear S, and simply search and pair. You can use the Gear S to recive and make calls via Bluetoh. BTNotifcation, thus aplications including Remote Notifcation (Notifcation Push), Remote Capture and Anti-lost wil not work with IOS mobile dvices. Use as Smart Watch Phone To use the Gear S asn idvidual watch pone (meanig to use without conecting to a mobile device), you ned to place your SIM card into it (only micro SIM card isuitable for the slot, if you are using ful-size or Nano SIM card, pleas change). Remove your SIM card from your mobile dvice. Open the backover and remove the batery. Gently slide the metal cover upwards acording tohe OPEN direction writen o it. Lifthe metal cover up and place your micro SIM intohe slot withe SIM chip facing down. Close the metal cover and slide it downards acording tohe LOCK direction. Inserthe batery, andow the Gear S is ready to use as watch pone. If the Gear S canot find your mobile ntwork provider, go t Setings  Network Setings  Network Selction  Selct Network. It wil search your mobile network provider automaticaly. This wil take a few seconds. When the sarching is done, you should be able to find your network provider. Tap the provider and your Gear S is conectd tohe ntwork. Note:he Gear S only suport 2G network: GSM 850/90/180/190 MHz. If you are using a 3G net