Unlocked cell phones are compatible with GSM carrier such as AT&T and T-Mobile, but are not compatible with CDMA carriers such as Verizon and Sprint. Nubia Z20 smartphone was launched on 8th August 2019. The phone comes with a 6.42-inch touchscreen primary display with a resolution of 1080×2340 pixels at a pixel density of 401 pixels per inch (ppi) and an aspect ratio of 19.5:9. It also features a 5.10-inch touchscreen as its second display, with a resolution of 720×1520 pixels at a pixel density of 330 pixels per inch (ppi),. Nubia Z20 is powered by a 2.96GHz octa-core Qualcomm Snapdragon 855+ processor. It comes with 6GB of RAM. The Nubia Z20 runs Android 9 Pie and is powered by a 4000mAh battery. The Nubia Z20 supports Quick Charge 4.0 fast charging. As far as the cameras are concerned, the Nubia Z20 on the rear packs a 48-megapixel primary camera; a second 16-megapixel camera and a third 8-megapixel camera. The rear camera setup has autofocus. The Nubia Z20 runs Nubia UI based on Android 9 Pie and packs 128GB of inbuilt storage. The Nubia Z20 is a dual-SIM (GSM and GSM) smartphone that accepts Nano-SIM and Nano-SIM cards. Connectivity options on the Nubia Z20 include Wi-Fi 802.11 a/b/g/n/ac, GPS, USB Type-C, 3G, and 4G (with support for Band 40 used by some LTE networks in India). Sensors on the phone include accelerometer, ambient light sensor, barometer, compass/ magnetometer, proximity sensor, and fingerprint sensor. It was launched in Black, Blue, and Red colours. It bears a glass body.
This phone will work on GSM SIM cards like AT&T or T-Mobile or any other GSM SIM Card network provider but it will NOT work on CDMA such as Sprint, Verizon or US Cellular or Boost Mobile or any other CDMA Networks.