Nokia Lumia 1320 Battery Backup

[Ruhi Roy]

Two days before I buyed Nokia Lumia 1320, when I buyed it was 50% charge & estimated time of battery backup was showing 3 days 18 hours & now when I have charged 100% it shows only 21 hours. Kindly guide me what is the fact behing this & also give me some tips to increase battery life.
Thanks & Regards,
Aditya.

 

[SammyD97]

21 hours isn't bad.

 

[Ruhi Roy]

Its not about bad or good. I just want to know why it is happening so? If u can tell fact behing this then I will be very very thankful to u.

 

[SammyD97]

It estimates remaining time on current usage. When you bought the phone, it wasn't being used, therefore the battery would've lasted long but now that you use it, it will last for a shorter period of time and 21 hours seems fine to me. No problem with it. On increasing battery life, not sure, because my battery lasts about 19-24 hours. Sometimes longer depending on usage and never felt the need to improve it any further.