I m using Xiaomi Redmi 3S prime 2-3 months ago, I m little disappointed with the phone because as per the phone discription I buy d Redmi 3S prime, the discription/Review say of the phone that the battery is 4100 Mah which will long last till one & half day easily then to the battery will remain 30% or less then it, but I m using the Redmi 3S prime I hardly play games n little bit Chating n my battery comes to an end after 6-7 hr I have to charge it, I do’nt know why this is happening with me, Redmi 3S prime in the phone there is a app name security in that app the battery is showing me only 4000 Mah but as per the Discription the phone battery should be 4100 Mah I do’nt know why is it like this little confusion of battery backup and plus battery which is 4000 Mah but it should be 4100 Mah but overall I love the phone the look, display, build Quality MIUI 8 also just awsm but sound is just about average and ya its little slippery if u buying a Redmi 3S prime u should buy a cover for it also with the handset together, I am just confused that why they have done like this battery is 4100 Mah but it shows 4000 mah in the phone and the battery backup also not as per what they shows