Supports dual SIM and dual VoLTE 4G: LTE FDD: B1/2/3/4/5/7/8/20/28 4G: LTE TDD: B38/40/41 (2535-2655MHz) 3G: WCDMA: B1/2/4/5/8 2G: GSM: B2/3/5/8 Wireless Network Supports Bluetooth 5.1 One of the big highlights of the phone is that it packs a large 5,160 mAh battery, with 33W fast charging supported. Another highlight is on the camera department, with the phone featuring a 64MP main camera. But we’ll get to the camera and its options in just a second. First Impressions The Poco X3 is a large phone and it feels quite heavy when grabbing it for the first time. The box comes with a clear case, which will protect the phone but make it even thicker.