I have been using this device for the past five months. This device looking so good but bettry backup is wrost. This device works on android version 8.1 ( oreo) . it's bettry is of 3000 mAh but does not run at 3000 mAh. It's uses 5.0 megapixel and 8.0 megapixel camras. Face lock is used on this device. Not good for money.