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This device comes with a innovative technique-Eyeprint Identification,which creates new experience of wakeup function,just need to take a glance and let it scan blood vessel in your eyes to check identifier. 

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TCL 3S packs a 5.0 Inch capacitive touch screen with IPS & OGS Full Lamination technology; 1920 x 1080 pixels FHD screen, 441 PPI, the hightest level of screen on the market; enables bright, amazing, exquisite, fine and smooth frames. And uses latest Android 5.0 as OS,features Qualcomm Snapdragon 615 (MSM8939) chipset, 64bit, Cortex-A53 Octa core processor which up to 1.5Ghz along with Adreno 405 GPU.

For the momery,it's paired with 2GB of RAM and 16GB of internal storage,its tf card slot support 32GB extended; high volume storage, plenty of spaces for apps ,big games ,high resolution videos. And it carries dual cameras,8.0MP front camera for selfie and video chats; 13.0MP back camera with flashlight and auto focus, F/2.2, 5P Lens, 88° wide angle, provides people the most enjoyable visual satisfaction.

TCL 3S has dual sim card slots and dual standby,supports 2G/3G/4G network; it also supports Bluetooth 4.0, WiFi, GPS, FM, Email, Messaging, Wallpapers, Calendar, Play Store, Tethering & portable hotspot, HotKnot, GLONASS, Multi language, etc.