iOS4 on 3Gs drains battery fast

[Sirolway]

I used to get easily a day's use on my 3GS with iOS3.
Now I've upgraded to iOS4, the battery is flat before I get to midday - it runs out FAR quicker.

Anyone else noticed this?
This is not good - if I'm away from a charger for the day, the phone isn't going to make it. I'd rather lose multitasking (or whatever's draining it) & get more life ..

Thoughts?

 

[GadgetGeek71]

There's been a lot of talk with people having this problem. I personally do not have this issue and I'm not sure it's because of the battery utility I use "Battery Doctor."

 

[jacollins]

I used to get easily a day's use on my 3GS with iOS3.
Now I've upgraded to iOS4, the battery is flat before I get to midday - it runs out FAR quicker.

I didn't have that problem with my 3G on iOS4 (and I was playing MP3's all day). I kind of doubt it's something special with the 3Gs. I think you need to figure out what you're running that's causing the battery drain. So what apps are you running? Are you streaming? Is Wifi/Bluetooth on? etc.

 

[bumzo1]

My dad has the same issue but my 3GS didn't, he said with light use it would only last a few hours and he has to recharge it multiple times during the day

 

[Sirolway]

I've finally solved this after my iPhone started crashing all the time - apps would quit 10-20 times per day!

I did a DFU wipe of the iPhone (held down both buttons for 8+ seconds while plugged into iTunes). This wipes all the data, takes it back to factory & upgrades it to the latest OS without going through all the intermediate OS versions.

I then set it up as a new phone (i.e. I did not choose the 'restore from backup' option)

I then went through iTunes & chose all the apps, music, photos etc I wanted to sync back onto it, synced it, logged into all the apps on my iPhone & generally got it back to where I wanted it

It now doesn't crash (at all so far, fingers crossed) and after a day of standard (light) use is still at 53% battery - never would have got this before

So that seems to have been a miracle cure - I can highly recommend
If I was to do it again, the only thing I'd do differently would be to take a screen shot of all my app screens so I could remember how I had it set up before ...

Hope it helps

 

[xAnthony]

I've finally solved this after my iPhone started crashing all the time - apps would quit 10-20 times per day!

I did a DFU wipe of the iPhone (held down both buttons for 8+ seconds while plugged into iTunes). This wipes all the data, takes it back to factory & upgrades it to the latest OS without going through all the intermediate OS versions.

I then set it up as a new phone (i.e. I did not choose the 'restore from backup' option)

I then went through iTunes & chose all the apps, music, photos etc I wanted to sync back onto it, synced it, logged into all the apps on my iPhone & generally got it back to where I wanted it

It now doesn't crash (at all so far, fingers crossed) and after a day of standard (light) use is still at 53% battery - never would have got this before

So that seems to have been a miracle cure - I can highly recommend
If I was to do it again, the only thing I'd do differently would be to take a screen shot of all my app screens so I could remember how I had it set up before ...

Hope it helps

Yeah a restore normally helps. This actually happened to me before when I updated my old iPhone 3Gs. I couldn't stand the slowness so I restored it and it fixed the problem.

 

[Ashin]

A totally clean restore is the way tbh.

Upgrading seems to cause all sorts of issues