Hi all,
Used to have the same problem but fortunately it's now resolved .... In my case at least.
Updated my iPhone 5 OTA to iOS 7 on 19/9 ( shut down all apps and a hard reset b4 the update ). Since then and up until last week the battery has been acting up. B4 the update I was getting usage of 10+ hrs and standby of 30+ hrs. . After iOS 7 I was getting usage of max. 6:30 hrs and standby less than 20 hrs. Started following this and other threads about 2 weeks ago
These are the steps that I've hone, hope it helps some you guys.
Reset all settings.
Turned off background app updates
Turned off Airdrop
Turned off Parallax
Turned off Auto Brightness and reduced brightness
Switched off Location Services
Turn off Wifi and Bluetooth when not in use
Turned off All System Services except Setting Time Zone
Turned on Limit Ad Tracking in Privacy/Advertising
Set Diagnostics and Usage to "Don't Send"
Set Fetch New Data in Mail Manual
Turned off Push in Mail
Location services limited only to the apps that I use, all others off.
System Services all off.
Battery calibration to adapt to iOS 7 ( full charge > use till shut down 5 times and also 5 hard resets at different times ).
Notification Centre limited to the apps that I use on daily basis.
iCloud > off except find my iPhone.
Automatic downloads in iTunes & App Store > off.
Settings > Cellular > USE CELLULAR DATA FOR > limited only to the apps that I use when I'm out and about ( I'm on wifi at home and office ).
Since last week the battery has shown a remarkable progress.
For the first time after the update I started seeing a usage of 8:30+ hrs and standby 30+ hrs.
Of course it's still not the same ( doubt if it will ever be like it used to ) but at the end of the day it's a ... Progress.
I believe that the power demand of iOS 7 and the A6 Chip processor on iPhone 5 are not well integrated ( just an impression since I'm not a tech guy ).
I know, by reading every post here, that a lot of you guys have tried all these measures without success.
Just wanted to share my experience with iOS 7 on iPhone 5.
Respect and Regards to all.