UNLOCKED GSM SMARTPHONE - Just put in your SIM card and go! This unlocked smartphone comes with the option to insert dual SIM cards, and uses the Android 9.0 Pie operating system and 4G LTE network. Compatible with GSM carriers such as T-Mobile, Cricket, Metro PCS, and AT&T. Not compatible with CDMA carriers such as Sprint or Verizon Wireless. GLASSES-FREE 3D DISPLAY - A 2160*1080 Full HD+ 5.99" touchscreen display comes with a fingerprint sensor and glasses-free 3D for a cell phone experience like never before. Bring the future to the present with the ROKiT iO Pro 3D. CHARGING SPEED / BATTERY LIFE - Charge the 3850 mAh Polymer battery fast and experience improved battery life with 200 hours of stand-by-time and 480 minutes of talk time. The octa-core processor gives you the peak performance you are looking for in a cell phone. Does not include charging block or sim card adapter.