After fighting fast batt drain until I couldn't take it anymore I did the following: Plug phone into power outlet and be connected to Wi-Fi. Jot down your apps and contact info. Erase all content and settings. (Settings, General, Reset) Once the phone restarts set it up as new. (Do not restore from back-up file). Turn on/off the features you like but don't send data to Apple when it asks you this. Reconnect to Wi-Fi. Do not sync phone for Apps. Go to App store and download again. You will not be charged again. Easy process over Wi-Fi and you avoid iTunes asking to back-up your phone etc. Add contacts (Contacts button on home screen) This is a pain but I feel this was necessary in the end. If your contacts are on your sim then you may not have to add many. You may get some of your contact info from your mail accounts which is in the next step. I copied my contacts manually just in case. NOTE: Skip this step if you want to avoid adding hundreds of contacts but your results may vary. Add your mail accounts. (Settings, Mail, Contacts, Calendars) Turn off Cellular Data. (Settings, General, Network). This is important as this bad boy kept data flowing constantly even when on Wi-Fi. Update: With Cellular Data turned "on" (after implementing the nuclear option) I'm not seeing the drain I had yesterday. Now it's time to check your battery usage (Settings, General, Usage) and leave the phone in standby for an hour or long enough to see if standby time is more than usage. If standby and usage are close to the same then something is still running and this process did not help you. If you see little to no usage but a bunch of standby time then you are looking good. .........sorry about the giant image......... Now connect to iTunes and backup your phone before a sync. This backup is key as it will be considered CLEAN. You may want to name it that when you do the back up. Now you can set your music up and playlists from scratch. Sucks but you don't want to pull corrupt data from a previous backup file. Backup phone again. REMEMBER to restore from the CLEAN backup if you should ever need to restore your phone. Choosing the wrong backup will mess the phone up again. Yes, it's a tedious process but I was finished wasting time reading post after post and waiting on Apple to help. I bit the bullet and started over with a clean install of EVERYTHING. Sad, but it reminds me of working on a PC and doing a reinstall of Windows. All I can say is that I've noticed a big improvement and I hope this helps others. Best of luck!