A larger and clearer screen, an improved rear camera, faster internet, and a larger battery: the Nokia 3.1 makes a leap forward compared to its predecessor, the Nokia 3. The device's 13-megapixel rear camera allows you to make sharp pictures. The 8-megapixel selfie camera stayed the same. Thanks to the larger, 2,990-mAh battery, your phone will last all day. The Nokia 3.1 has a compact, 5.2-inch HD screen.