iOS 7 kills 4S battery

Read here:

http://osxdaily.com/2013/09/19/ios-7-battery-life-fix/

If you've had this problem that long, then corruption in your backup is the likely cause. Restore your phone as a new device, then sync your content back to the phone. Do not restore from backup.

Restoring won't affect any of that stuff.

I have found that when I close as many apps in control center as possible, it seems to conserve battery.

Charging the device to an outlet without using it for 48 hours seems to restores lenght of battery.

Portable battery recharging is not enough electric current to extract energy. Unlike older cell phones that killed the battery if it was plugged in to an outlet all the time, smart phones need power.

I have made a habit to close out all apps before i turn off devices which speeds up all my functions when I repower.

Remember to go to settings and delete cookies, unwanted data and history. This will save data fees and disk storage. Get rid of stuff like ancient music, bookmarks and old photos.

Also backup mobile device to computer, not just to icloud save data storage, battery and you can recover information easier.

A word about devices and car charges:

Also don't leave your car charger connected in the car it drains the car battery even if car is not running.

I learned the hard way on this tip

Be adivsed I am not a tech specialist but have used these methods and have found them to work. Logic behind this method is that less the device has to keep memorized as open the less energy it will use. Smart phones are mini computers jamming all our needs into a tiny drive.

Am having the same problem. I turned off all location services, closed all open programs, have called apple twice...and still...phone is basically unusable. No problem with OS 6 on my iphone 4S. My battery went from 100% to 4% in three hours and with no usage. Even brightness is at about 75%, Did a test this morning. Left my phone and ran some errands. In an hour and 15 minutes, battery drained from 100% to 85% with zero usage. This is horrible.

This fixed my issue YMMV

SETTINGS>WIFI>Ask to join Networks TURN OFF

I think it might also be a bug, my 4S went down to 1% I could actually see it go down from 18% just like a watch. The phone started at about 60% and went down to 1% in about an hour but the useage still stated I had over 6 hours of stand by time, when I plugged in the phone to charge it jumped from 1% to 27%.

article below solved my problem...\.especially p. 18 of 24,

Reduce auto-lock period to switch off backlight

Reducing how long it takes for your iPhone to switch its display off can help to considerably conserve battery life. When the smartphone is put down on a table, for example, it can take a minute or two — perhaps even longer — for the display to turn off. This means the display can quietly eat away at the device's battery life while it's not actively being used.
Go to Settings > General > Auto-Lock, then set this to 1 Minute or 2 Minutes, depending on your preferences. The shorter the time period, the greater the benefits to your iPhone's battery life.
http://www.zdnet.com/how-to-improve-your-iphones-battery-life-updated-for-ios7-7 000014902/
I switched to 1 minute (and did a few other things) and 4 hours later I'm at 88%...didn't even have to go to Apple.

"...and the phone is really hot (even if it's sitting idle with screen turned off next to me on my desk)"

This may indicate that your phone is always looking for the wifi, cellular network, that it cannot lock on to. Does your phone still drain power in the "Airplane mode?" If you are not getting enough cellular signal in the house, it is better to turn off "Cellular Data" in the Settings. FYI, I have a 4s and iOS7 does not affect my battery life.