the 4S battery life figures don't seem really any worse than 4 ?
heres todays usage on my 4
Got A New iPhone 4S
Went to the Apple Genieus Bar today after trying everything posted here plus a number of factory resets and chatting with Apple Support. They hooked up my 4S to a laptop, the guy said thats not right, did a reset and noticed that my 3G kept on going offline, then back to search mode and locking in to the 3G signal only to go offline again. This is despite me getting 4 bars from AT&T in the store.
He left, came back with a new 4S, transferred my sim card to it. I resynced with the cloud got everything back, then restored from back up with my laptop. This process took about 35 minutes in total, and in this time he saw my old 4S go from 85% to 77%!
The Results
Charged up my new 4S to 100% with everything on the way I normally had my 3GS. WIFI ON, BlueTooth ON SIRI ON, 3 email accounts with PUSH (NO EXCHANGE). I am happy to report my Battery seems to be holding up far better. It is not as good as my 3GS was, but it is nowhere near what my new 4S was doing.
So far;
Usage has been 48 minutes
Standby is 5 Hours 30 minutes
Battery sitting at 93%!
NOTE: My iPhone did get warm to the touch during charging and use, the new one does not.
As N19h7m4r3 said however, technology changes mean that A5 is approx 73% faster than A4 in benchmarks at lower power usage.
Standby difference is because 4S cannot switch from 3G to 2G data, manual option to switch 2G data on has been disabled in IOS 5 settings for 4S devices and therefore standby will be affected as the mast search and coverage availability while on move will be much more aggressive than with previous generation.
To my surprise, this sudden yankee induced jump in tech without looking back, might be actually a bit of a problem to some of us. I'm with T-Mobile for example, and we now have this "free roaming" network with Orange backbone. The idea was that in areas of poor coverage or areas where redundant/outdated T-mobile masts are being switched off, all T-Mobile phones would automatically switch over to the new "togetherness" of the T-Mobile Orange network. Trouble is Orange roaming is 2G and EDGE based, and every now and then creates a bit of a havoc, where the new iphone 4S can do 2G voice but MUST be on 3G network, which in case of T-Mobile-on-Orange it doesn't always understand, thus on some masts I'll have 5 bars of signal for talk, then the phone stumbles and falls all over the place:
T-Mobile and Orange keep this "temporary migration" going for over a year now and being completely incompetent bunch of muppets they are practically caught unprepared, with their pants down by new wave of phones that will not do the ancient tech anymore thus rendering their half baked "internal roaming" completely broken and useless for some customers. I, for one, move and drive a lot, so I get caught by this **** all the time, even in parts of London. I honestly cannot wait for the end of the contract and I'm never, ever going to either of the networks. Never the less, gents - this highlights small problem for those of you that expect to go abroad to countries of, let's call it, lesser technologies available - you may suffer from a lot of screens like the one above in remote areas.
It seems the Apple support forums are covered in people with similar problems.
71 pages in this one thread alone.
https://discussions.apple.com/thread/3391947?start=1050&tstart=0
Here's a quote from one guy that had the Apple "Geniuses" check it.
This certainly seems to be a bigger problem then most realise.
Orange/T-Mobile have switched on roaming on 3g in a lot of areas. I'm with Orange and get a T-Mobile 3G when i have no Orange signal. And before you call you call people muppets you should get the facts firsts as in they could'nt roll it out any faster as it was being took to court by the mast maintainers.
The Apple store replaced my phone, will see how the new one does.
Depends how you compare.... here's mine currently:
How would it be possible for the battery to last as long as it did in a 4 given that the 4s has two cores to run and Siri etc rinsing the battery? Surely people don't expect it to be as good?
Did you leave the phone virgin clean for testing or load all your old apps and stuff back on?
Hmm, I pulled my 4S off charge at 6am.
I've not used it but have just checked battery. 86% not good.
Usage stats say 3hrs 40mins of use
Definitely some shenanigans going on with it.