My wife and I still have the battery drain problem since 7.0.6 on our iPhone 4S which did not occur with iOS7.0.4. and we tried quite some things (see below) already but they did not help in resolving this battery drain issue. It also is indicated at 'Settings' > 'Use' > 'Time since last100% battery' that Use and Stand-by time are the same.
# Normally turn of iPhone by using power button
# Remove all open apps bij pressing the Home button twice en slide all oustanding apps away and then press 'Home' + 'Power' button for 10 seconds
# We do not use Hotmail/Outlook accounts in our mail app but we did remove all existing mail accounts from our mail app restarted our iPhones and then added the mail accounts again.
# Calendar indication in the notification center is turned off (saw a tip mentioned in another topic and on Youtube.
# Brightness is set to approximately 40/50%
# We only use WIFI (at work, home and at friends/family). 3G and Bluetooth are turned off.
# We didn't on 7.0.4. and still don't use background apps (Refresh apps on background). Its completely turned off
# Privacy > Location tracking > Only Maps, Google Maps are allowed to use location tracking
# Network selection is set to 'manual' instead of the standard automatic.
# E-mail is fetched once an hour
# Siri is turned off
# I already tried to ran 'recover network settings' and 'recover all settings' but this also didn't help
# Drain battery completely to 0% and wait for 30 minutes and then charged the iPhones again but didn't help either
I hope that iOS7.1 will fix this battery drain. I hope it will be released ASAP. If someone has another solution then please let us know.