Yup....same here.

Unless it's my imagination my battery performance has dropped significantly since installing the update last night (relatively new 3GS)

Hmmmm?

 

Same here. I suspect it's the multitasking stuff.

 

According to various forums the reasons vary from push notifications and new location services defaulting to on and the phone constantly trying to set up Internet tethering. 11 page thread on the apple discussion forum going on at the moment about it

 

If you update to this software, do jailbroken phones go back to standard?

 

Yes.

 

Definitely using more battery. It was on 100% when I left the house this morning. It's now down to 50% and it's only 2:30pm. I wouldn't mind, but I've not made any calls and only sent two texts in that time!!!

Very unimpressed

 

My bat seems to be better, on 57% at the mo from this time yesterday.

 

Yes, but Redsn0w has been updated to work with iOS4.

Although I had to setup the phone as a new iPhone in order for it to connect to O2 (restoring from backup didn't work).

Steve

 

Same here - very disappointed at the reduction in battery life - and that's with 3G and GPS off!

 

Wierd.

If anything, my battery life seems to have improved.

 

Have you turned all location services off as your camera now uses one etc. Another tip from the folks on the apple forum seems to be to let your battery run right down, so it will accept a full recharge. Then full restart.

Oh....and check the push notifications as ios4 seems to default to on.

 

Same here the battery life on my 3g seems to have improved.

 

where do you find the push notifications?

 

mine wont update gggrrrrrr it says backing up for ages then it just stops gggrrrr wheres my blackberry lol

 

I've just googled redsnow and 3gs - and all I see is 3g and 2g. Does redsnow work with ios4 and 3gs iphones?

 

My battery was being drained by my Exchange connection to Google Mail. Changed back to IMAP and it's better than it was. Google have I think fixed their servers, I'll try again later.

 

Settings-mail, contacts, calendar-fetch new data-push

 

OS4 doesn't play well with my Alpine iPod stereo, it works but it's super slow selecting albums where it was lightning fast. Fingers crossed Alpine or Apple can sort it out or it's ebay time.

 

http://blog.iphone-dev.org/

 

OS4 is bloody slow on my 3G!!! after sending a text and pressing home button it takes 4 seconds!!! Before it was like straight away!!! It's been like that ever since the update! Takes a while for everything!!!!

 

Cydia works ok but very slow indeed on OS4 my mate's saying.

 

Went to bed around 1am, and my 3gs had about 88% battery left. Woke up at 8am, andf it was down to 50%. So it's used 38% of the battery just by being turned off for 6 hours. Location services and push mail etc are all turned off.

Think I'm going to be looking for a new (non-apple) phone soon....

 

Texting is now very slow on my 32gb 3GS as well

 

obviously being a bit thick...

....where are the instructions for the new features??

The only ones I have seen up to now are on here!

Don't know if I like the background on all the time... may get used to it.

 

Def some thing wrong with that, I'm still on 5% from my last post.
It's not that I'm not using it, because it says just over 4 hrs use.
Run it right down and do a full charge if you ant already.

 

And remember to cancel Internet tethering as it seems to default back to trying to do this.

 

Os4 is flawless on the iPhone 4 . Proberbly a ploy of apple to make you want a iPhone 4

 

Well it's having the opposite effect on me

 

What mail accounts do you have Iain? My battery drain was 100% mail setup.