My iPhone suddenly drain alot of the battery and the Usage Time is always same with Standby Time even i also didnt use my phone.

One night the battery will drop from 99% to 90% , might i know how to solve the problem ?

Besides that , I had closed all the background apps , and it still same ..

Usage time is how long you use your iphone & standby time is how long your phone is in standby. Did you turn off your 3G & Cellular Network every night?

yes , i know the meaning for the usage time and standby time , but my phone usage time and standby time are always the same even i lock my phone ..

I didnt turn on the 3G&Cellular network , also didnt turn off the Wi-Fi ..

my friend also had the same problem like u.

my friend tried to restore, yes it's work and problem solved. but after few days, the problem still occured

if u iphone still in warranty, u can claim, because i saw many people claim warranty for this problem

This post has been edited by Cinta Laura: Mar 8 2011, 12:32 AM

Just try to restore your iphone to factory settings through itunes. Hopefully that will work.

I had restore my phone 1 time before because of this problem , after around 2 week + then the problem came again ..

Maybe will try restore again later, if still got this problem , then might go try to clam for warranty ..

There might be the problem of certain apps. Some apps will run in background even you manually close it at multitasking bar. A hard reset may solve the problem.

Hard reset: Press-hold the Home button (big circle below the screen) and the Sleep/Wake button (on top of the iPhone) simultaneously; Continue holding both buttons (Ignore the "Slide to power off") until the iPhone shuts off and begins to restart; You may let go when you see the silver Apple logo.

Hi , i had tried hard reset also , it still same ..

I had tried to find alot ways to solve this problem , but fail to solve it also ... that why i try my luck here to see anybody solve this problem before..

maybe will try to restore my phone and see how ..

Guide regarding how to save battery life

1. Turn off 3G and cellular network whenever u don't use it.
2.turn off location service
3.turn off all the application alert
4.reduce the brightness of ur idevice

hi, do anyones know any local payment processors such as ipay88, nbepay and so on which can be integrated with iphone...

need help.

how bout try to set airplane mode during sleep time =p , not like u wanna get disturb during sleep except for alarm =p

Wao something wrong with my Iphone 4?
Has charged fully 100% last night.
Used for 2 hours of plainly surfing web only and dropped to 52% now.....

This post has been edited by Ash1988: Mar 17 2011, 12:11 PM

Did you update to OS 4.3?

hi guys, i just purchased a new iphone4 and it comes with 60% charged battery. wanna ask for the first time charging it how long should i leave it to fully optimized my battery life?

my friend told me to on the phone, charge it up with wall socket, then off the phone. leave it for 8 hours. on the iphone then leave it for 20 minutes before stop the charging. is this the correct way?

thanks in advance =)

No im still using 4.2.1

I also have the same problem. My iPhone 3gs used to be quite good from charging once every 2 days to once a day and now i have to charge every 12 hours or less, if i surf the net.

Usage wise has been around the same since i first bought the phone, except that i have more apps now. Big drop in the battery life since last Sunday. Went for some drinks last nite and battery dropped from 36% to 5% in less than an hour, and that is after i turned off all alerts, location services and quit all background app.

My frind told me that if i jailbreak, the problem will be even worse. Anyone can confirm this?

Maybe i should go back to DIGI to check as my warranty expires next month!

last time i also havin' this problem when i get the ios 4.2 updated. i think some guy here already explained the battery draining issue about ios 4.2 onwards...

please refer to this same old news New Iphone OS

my only solution to this battery draining issue is just enable Cellular Data 24/7 since the upgrade of ios 4.2.

& now i'm on 4.3 with Cellular Data ON too. no more battery drain...

u can try to enable ur cellular data once fully charged & c how its goes for few days....

Dears
I am new to this forum and new to Iphone, When I charge my i Phone for 100% in the night, and left it till morning it had reduced to 92% with out me using the phone in the night is this normal ? pl advice
But my 3 G is enabled all day.

Thanks

Demha

If you don't have app running in the background then the battery wont drain alot. But that seems pretty normal for me. I'm on iOS 4.3.2 and everynight I leave all on(3G and WIFI) and one or two apps running in the background and it drop about 6-8%.

its normal....