Dear All,
I am lurking around this thread for quite some time as I have bought a 4s (32GB, white, serial number starting with DNPG…) end of Oct. last year and was confronted with the well known "phantom usage" problem and the resulting short battery life. In fact, the best I managed to get out of the phone was around 1day and 5 hours of stand-by with basically making no use of it at all. Nevertheless, the phone would record about 60% of the stand-by time as actual usage time…
To cut a long story short, I tried about all tips and hints given on here and all over the internet. I switched off Siri, all location services and all mail accounts. I resetted the phone numerous times. I restored the phone. I resetted the phone and sat it up as new (also in DFU mode), I put on the latest IOS (5.0.1 release 406). Nothing really worked out for a longer period of time. In fact, I was about to become crazy, as I managed to get rid of the phantom usage for a short while and then, out of the blue, without changing anything, phantom usage was back…
In a nutshell, I hoped for IOS 5.0.1 which didn't do it for me, I hoped for the 9A406 firmware release, which didn't do it for me, I switched the old micro-sim card against a brand-new one, which didn't do it, and then I hoped for IOS 5.1 - which is not yet released. And as my 90 days of free phone support neared the end I gave up hoping…
So, two weeks I phoned the Apple support. Basically, I told the guy on the other end the whole story… And especially after telling him that I already did a "forced reset" and restored the phone as new afterwards, he was quite sympathetic - and told me that there is no other way than exchanging the phone - which - of course - was fine for me. So he made an appointment to the local Apple Store for the same noon and told me, that I should tell them that already everything was tried regarding the phone, and the only remaining option is to exchange it - which I did.
The genius bar guys gave me a new (or refurbished? - frankly, I don't care) phone (serial number starting with C39GK). And what can I say… So far, it is all good! As you can see from the screenshot attached, the last charge lasted for about 3 and a half days with light usage, and, very important in my opinion, the phone does not show any signs of the formerly encountered "phantom usage". Fyi, I did not restore from a former backup so far, but only sync'ed my contacts and music and restored everything else manually.
After all, conclusion from my side is, that it is NOT a hardware problem (battery was fine acc. to a test conducted in Apple store, which I have no problem to believe in as the phone was showing normal behavior in between…), but a complex problem which is not necessarily erased by resetting the phone. In the best case it is masked by the shutdown of all services and applications which make the iPhone an iPhone, but a simple cellphone instead. As all of us have spent quite big bucks on this device, that can't be the solution…
So I really advice you to switch your phone in case you experience these kinds of trouble. Exchanging the phone was no problem at all (the Apple guys and girls were really helpful) and I really start to love the phone again ;-) As already said, serial number of the new phone is starting with C39, and it is wearing a french batch about risk of injuries due to excessive volume...
So, to cut it short, thank you all for your advices and proposals of dealing with or working around the problem. Nevertheless, I would advice you to contact Apple and get a new phone (for as many times as it takes to have a "failure-free" one...). This phone is simply too good to not being able to fully enjoy it!
Wish you all the best,
Fabs_Hamburg
