MX8 iOS & Android Mate Silicone Belt Sim Supported Smart Watch can be used as a standalone Watch Phone or sync with your smartphone. This smartwatch is compatible with Apple iPhone 6s, plus 6s, Samsung S6 edge plus and S6 Android by simply using the BT function as this smartwatch can connect the smartwatch by using Bluetooth. The cellphone contacts will be displayed on the watch when they both connect via BT. The watch can be connected to the phone dial. Open the phone dial function to see the call log menu where all the missed calls, dialled calls and received calls can be viewed instantly.