Sony xperia P battery life

[newsperiauser]

Hello 

I recently got a brand new sony xperia P device. I have read the manual attached with the device. It said to charge for at least 30 mins before the first use. I plugged the charger in and left it till the green light appeared (it seemed that the battery had been almost fully charged before I charged it). I switched the device on and it said 99%. on the same day/evening teh battery drained from 99% to 75 within an hour and a half of charging. I left to charge over the night and still the battery would not say 100%. 

I am confused...

[_alexdon_]

If your device is new,wait a couple of days more.It will stabilise,you will receive updates soon.You have stamina mode,which helps you preserve battery.

[newsperiauser]

Thank you for your reply. Well ... it has been more than a couple of days and yes it did charge the full 100% although I had to leave it plugged it a whole night. Another thing is that the battery life is really short. I am not really sure whether it is supposed to be like that but a fullly charged battery lasts for around 4-5 hours that is it. 

[_alexdon_]

Unfortunately,it has a small battery and a quite large screen.If you keep data active all the time and syncing and some more apps,it just cannot take that much.You need to preserve the battery by using stamina mode,disabling other features when not using the phone.