off it when you not using, make sense mah ...

nothing is perfect in this world

I realize one more thing, when I try to browse at a very weak 3G/Wifi signal location, my batteries drain very fast. Not to mention the page took more time than usual to appear.

When I tried the same at a better signal location, the batteries last longer and this make me wonder if signal strength actually contributes to battery's usage?

Anyway, I'm upgrading to 3.1.2 and hopefully I can save some money from getting a car charger.

my battery life was terrible on the 3GS. I had to charge it twice a day. Frustrated, I took it to the Apple Store in Doncaster. Told them my problems, no questions asked and I got a shiny new 3GS ...and..the customer service is excellent. Very friendly and helpful people, unlike in Malaysia where you walk to an Apple Centre and the staff are busy playing around with the Macs on display

@n20nine,
Might I ask what you mean by "terrible"?

seem like with fw 3.1.2 fix the battery drain issue.. how about you guys ?

I updated to 3.1.2 on Sunday
Surfing on 3g battery dropped from 100% to 90 %
in 25 minutes. Is this normal? Was the same I guess when I was
on 3.0.1. Am on 3gs. Cam someone let me know if this is normal or
do I need to do a fresh restore again?

Ok 5 mins more and radio on the background while surfing
now on 84%. That's draining fast

This post has been edited by hussain: Oct 13 2009, 08:06 AM

@hussain
No one can tell you whether it's normal or not. It depends on your usage pattern. You need to remember that energy usage while surfing on 3G depends on the signal strength. The weaker the 3G signal, the more power are used to get the data. It also applies to normal signal and not only for surfing. That's why it's suggested to turn off 3G if the signal is not strong.

It would be abnormal if the battery drains fast if the phone just sitting idle and not running anything.

Hussain,

I guess we have the same issue. I updated to 3.1.2 and notice that battery drain faster compare to 3.1..

Will collect some data when idle, surfing, gps usage for comparison..
....

tks mate

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Added on October 15, 2009, 9:15 amOk lets kick this thread off again.3.1.2 is great but drains the battery like crazy,but of course i cant seem to put my phone down so i cant test on standby.Has anyone tested?
Does blackra1n jb and pwnage 3.1.4 jb method effect the juice levels?????

This post has been edited by hussain: Oct 15 2009, 09:15 AM

sure draining???

Mine act normal now....
listen music from 9 til now...100%->98%

currently using iphone 3gs. i always charge the battery to full before going to bed(1-2am).the next day the % always drop to like 90% (alarm 8am). and after 1-2 hours the battery drop to like 85%, i only check the message once or two times in this period. so is it normal?

updated to FW3.1.2 yet? try if not...no harm....except if ur phone is JBed

not yet, always get the prompt everytime connect to itunes. should i backup before install?

If i am not mistaken ipod usage doesn't drain the battery it's the same for me.Listening radio on 3g does

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Added on October 15, 2009, 12:25 pmFor your case i am sure some apps are running on the background as it should not lose 10% on standby

This post has been edited by hussain: Oct 15 2009, 12:25 PM

how to identify what apps are running on the background? normally after using apps, i just push main menu button back to home screen.

If u are jailbroken u can use sbsettings and under processes u can kill all background apps but if not jailbroken press the power off button until the slide to unlock message pops up then keep pressing home button until back to main screen

i will try that thanks. i hope it works, everytime i unlock, and start using even sending a sms, the battery % will drop 1% then slowly 2-3%, i need to charge every 2 days thats quite frustrating.

also go to settings and disable push notifications.That helps a lot

This post has been edited by hussain: Oct 15 2009, 01:00 PM

@btr999,
Every 2 days charge is pretty good, IMO. When I'm travelling on leisure, my iPhone batt lasts sometimes for the entire duration of the trip; of course, I don't answer ALL calls that come in, it's really just put on standby

Hey guys, what do you think of my battery usage? Is this normal?

From 100% charge, after 7hrs 44 mins of standby and 4hrs 31 mins of usage turned (on wifi to access Mafia Wars for a while and to played a few games of TTR3 .. 3G was on for a couple of hours since disconnected from charge.. listening to MP3), the battery is now 67%.