Highlight Points: Naked Eye 3D Dynamic Perspective Without 3D glasses or other assist, you can directly enjoy dynamic perspective 3D movies, 3D pictures on the phone. Make your own 3D home theater. SONY Camera 13.0MP SONY rear camera, f2.0 large aperture, smile shot, voice shot, face detection, face beauty, HDR, convenient and interesting to take photos. Finger Print Sensor Safeguard for your privacy, 0.2 second to unlock without pressing power button and adjusting hand gesture. The finger sensor can also control your music, just swipe left or right to switch songs, funny and easy. Wonderful Screen 5.5 inch large screen for excellent experience of movies or games; 1920 x 1080px FHD screen with OGS technlogy, vivid and lifelike, fine and smooth. Android OS Android 5.1, fast and better compatibility, provides excellent and stable performance This phone will only work with 2G: GSM: 850\/900\/1800\/1900MHz 3G: WCDMA: 850\/900\/1900\/2100MHz 4G: TDD-LTE: Band40 FDD-LTE: 800\/1800\/2100\/2600MHz It's unlocked for worldwide use, customers please take a check to see if your local area network or the communication operator you are using is compatible with this phone before purchase. You can also go to this topic [===Official Help Center=== How To Check If This Phone Can Be Used In Your Country] to find how to confirm this. Basic Information Brand Vkworld Model Discovery S2 Frquency band 4G: TDD-LTE: Band40 FDD-LTE: 800\/1800\/2100\/2600MHz 3G: WCDMA: 850\/900\/1900\/2100MHz 2G: GSM: 850\/900\/1800\/1900MHz Style Bar Color Golden Shell Material Plastic System OS Android 5.1 CPU MT6735A Quad-core Cortex-A53 1.5GHz GPU Mali-T760 ROM 16GB RAM 2GB Card Extend Support TF card up to 32GB extended Screen Display Size 5.5 Inch Type IPS (LG OGS LCD), capacitive touch screen Resolution FHD 1920 x 1080pixels, 2.5D corning Support Format FM Radio Yes, earphone needed Earphone Port 3.5mm Video Format MPEG-1, MPEG-2, MPEG-4, H.263, H.264 ,RV , VP6\/VP8 , Sorenson Spark, SP\/ASP GMC, XVID, BP\/MP\/HP, WMV7\/8, WMV9\/VC1 BP\/MP\/AP, AVS, JPEG\/MJPEG Audio Format MP3,WMA,MP2,OGG,AAC,M4A,MA4,FLAC,APE,3GP,WAV Image Format JPG, JPEG, GIF, BMP, PNG Data Transfer & Connectivity Data transfer USB\/Bluetooth Mobile internet