Q: iPhone 5 battery draining very fast

I did my restore from DFU mode - still only got 5 hrs 14 min of basic usage  before it died - very disappointed - today it has already dropped to 89% and only usage of 31 minute - that extrapolites out to about 5 hours of usage - should I try another clean restore?

Update... So far after i put my phone into DFU mode and did a restore from icloud backup the battery seems to be quit a bit better! Im wondering if there is an issue with the factory installed ios 6 and when you do a complete restore it fixes that problem.? Will update a little later on battery usage agian to give everyone the results, albeit good or bad. So far stats are alot better.

Some people reset their network settings and reset their privacy and location on the reset screen and that seemed to help. I noticed passport location services turns on a lot so I turned the passbook location off and that has seemed to help. Not sure how much til I see how my phone does today but it seemed like it helped a fair amount last night.

So I did my restore just from iTunes - Restore option on the Summary page.  Sounds like that is different than DFU mode restore?

I'm only seeing a marginal improvement.... I let my battery run dead this morning and am charging now.  Should I try a DFU restore? Once I get it into DFU mode how do I actually do the restore? Im assuming iTunes will know what to do?

Thnx!

Hold down control and option , then click restore in itunes.

Thats after you put the phone into DFU mode. If your not sure how to do that , Google it. it will give you exacts on the process.

On a PC... would that be CTRL and ALT? 

Yes i believe but google it to make sure, I only have Macs

Its simple maths! That battery seems fine.

8 hours talk time equates to 12.5% per hour

225 hours standby = 0.44% per hour

Therefore

Usage: 3hrs 17mins = 40%

Standby: 10hrs 48 mins = 4.7%

Call Time: 1hr 48 mins = 22%

battery life at 49% atm

This should add up to 66% battery use leaving you with roughly 33%. You have 49% left so I would be happy with that.

Update: The DFU mode and restore from icloud i performed yesterday has seemed to work well. Normally by this time of day ( noon ) i would have 70% left and now after the DFU and restore i still have 93%, still doing the same amount of use as always. Hopefully this will help everyone else that is experiencing high battery drain.

Nice! And what was your usage time at noon?

1 HR 25 mins use, 3.55 hours stand by.

I have bluetooth off on my iPhone5 and everything else is turned on.   Brightness is at around 78% and here are my most recent results after 3 cycles.  Quite similar to my 4. 

Just got off the phone with Apple Care - I'm the first one to complain about a battery issue!!! He hasn't heard of any issue!!! What a crock....

Wow for approximately the same amount of time I had 73%!! There is really something going wrong... Will try DFU procedure tonight.

Use: 1h46

Standby: 3h32

And you have not had any battery issue at all?