This a very very nice smart phones. Sound quality is very good. There are planty of modes to choose from in the camera, including beautifuly, panorama and manual. Xiaomi redmi note 4’s 4100 mAH non-removable bettery lasted for 15 hours and 10 minutes in our continuous video play back test. The 5.5-inch full-HD IPS display has a rsolation of 1080 * 1920 pixels, which works out to densty of 402 ppi. The rear camera, dual-tone LED flash and fingerprint seancer are set up much the same as on the redmi note 3.