Even if you go to the Apple store to complain about battery life they ask if you set your phone up as new or restored from backup. I just had my battery replaced in my iPhone 5 because the battery life was awful! They would not replace the phone because they now have the ability to replace just the battery and their diagnostic software reported nothing wrong with the hardware or battery. I would get 1hr 45 minutes of usage and 4 hours standby and my battery would be below 50%. My phone was always dead by 5:00pm and I don't play games or stream videos, mostly email and web pages. Aside from the statistics, I know my expectations on how long my battery should last based on having a new iPhone every year since 2007. The battery specs for this phone are no worse than previous phones. I had an iPhone 4s that had bad battery life from the get go and I jumped through all kinds of hoops with the Apple Store like restoring as new and a few other tests before I insisted on a new phone. Their diagnostics showed that the battery and hardware was fine. This was a few back and forth trips to their store which is an hour away. I finally insisted on a new phone and the battery issues were resolved. I'm talking night and day difference! Also, I restored this phone from backup right at the Apple store and the battery life on the new phone was fine. I hope the new battery in my iPhone 5 does the trick and it was not a hardware issue draining the battery. Nonetheless, when restoring from backup, aren't you just importing your user data not the old iOS. In fact, after your phone has been restored, it downloads all your apps?