Many important questions are missing in the survey. I am a redmi note 4 user and my brother has redmi note 3. While comparing the two, i found out that regarding style, buildquality, camera and battery, redmi note 4 is superior to note 3.But,when it comes to display, i was greatly dissapointed as the screen of my note 4 had 5 dead pixels in it and the display was of leass clarity and less contrast when compared to redmi note 3. Since, note 4 is an upgraded mod from note 3, it should have been superior to the former. But here, thats not the case. I didnt except this from xiaomi. So, solve this display issue through some software update or something.