This watch has two working mode
One is company mode(Bluetooth), It enable to make call or receive call or send or get message via Bluetooth
The other one is Network mode(Sim Card inserted)It enable to make call orreceivecall and send or get message via the sim card you inserted which means at this time this watch works as a real cellphone
Equipped with the most up-to-date technologies.With network-connected function, the Gear S can be operated as a standalone phone utilizing any GSM SIM card, meaning you actually can do everything without your cell phone. It also can work as a Bluetooth device with your phone. By installing a customized software on your phone, you can make Bluetooth calls, check SMS or IM notifications right from your wrist. It also offers a unique two-way anti-lost function. No worries of theft or lost any of your device
Personal Health Monitor
Set goals and get started today! The Gear S comes with pedometer, sleep monitor and sedentary reminder. Check your achievement and count calories after a walk or jogging, always keep yourself motivated. Long time sitting causes various health problems. With the help of sedentary reminder, it truly looks after yourself for you!
By installing the notification software on your phone, you can customize your notification app list, looking for your phone or the Gear S and change push service. Just this simple!
This watch is Bluetooth4.0.Most of the functions support android 4.1 and up smart phones.But for iphone, not it just support answer & call, phone book, music play, camera, clock, pedometer, phone anti-lost alert. Still not support SMS, Radio, remote camera control, sleep monitoring, etc.