updated my iPhone 4s thru iTunes, the file is quite big i think 800++ mb.

Battery significantly improves, only during first hour. Usually when i disconnect after 100% charged it will only last less than hour if i make few calls and whatsapp. But it still showed 100% after one hour. i think it can be considered good already. iCloud on, notifications on, Siri On, 3G on, wifi and bluetooth OFF.

After few minutes on FB, and whatsapp, the batt back to normal drain already. Damn it. I don't really care anyway, because i get used to it. I don't want to disable everything on the smartphone, I'd rather charge it often than to lose some smartphone functions. If disable everything better use nokia 3310 instead.

So guys, don't hope too drastic battery life with this 5.1 update. My only solution to battery drain problem is simple, get used to it. Get a car charger or mobile batteries or whatnots. My friend on Galaxy S2 also tell me the same thing her battery won't last a day, but people seems to make a big fuss because it's Apple. My blackberry which don't even have a quarter of iPhone apps can only last barely a day. If i don't use BBM. So if iPhone battery can only last a day with loads of apps to use, i think it's a good deal already.

I think the best feature to increase battery life is the 3G toggle switch. but digi at my place sucks, so i have to switch it ON.

Tomorrow will test with whatsapp not in use and very brief FB browsing. gonna update here for you guys

hey, the battery significantly improves. i managed to to keep the 100% bar up till 6 hours and 30 minutes after charging then it dropped slowly..like, it's still possible to get more than a day standby time provided:

1) no or little whatsapp (I'm active whatsapp user, dammit, what to do, blame the gf..hahaha)

2) no or little time on FB apps (try to use Safari instead, FB app sucks battery juice like shaite)

3) 3G off (in my case since 3G signal is not stable at my place, i toggled it OFF so EDGE is on all the time)

Just a question guys, if we go to area with strong 3G signal, i noticed that my EDGE sign disappear and i have to reactivate 3G or else my line will become active for voice and txts only,

i thought 3G and EDGE coverage should redundant with each other?

This post has been edited by ssangyongs: Mar 11 2012, 01:16 AM

17 hours and 45 minutes with 76% juice level still available.

However today not really active with whatsapp, GF working..wehooo!!
3G off all time EDGE only
FB also on occasionally.

1 day 13 hours already. And i miss my charger already

But EDGE is ON instead of 3G (don't need much speed really) and last nite during work i put it on Airplane Mode for a good 5 hours.

26% juice left.