Just recently we talked about the battery life – or lack of – in the iPhone 4S after people upgrade to iOS 7. The iPhone 5 seems to be OK so far, but the 4S has taken a battering.
A lot of people responded to our article, to say that their iPhone 4S had had this problem after they’d bumped up to iOS 6, so after a bit of thought, we came up with a solution.
After spending a lot of time with iOS 7 Beta, we noticed a big difference in the battery life, which was the same thing we saw with iOS 6 last year. It’s not actually a hardware problem, and it arises only when there’s been an update.
Tests showed that the iPhone 5 and 4S battery drain didn’t always happen – it looks like it’s random, but it’s actually connected to the conditions under which you install the update. There’s a simple way to update without falling prey to these troublesome symptoms.
We managed to stop battery drain on both the iPhone 4S and iPhone 5, but this is something you shouldn’t have to bother with, as Apple should be on the case, really.
First off, you need to back up your handset, then install iOS cleanly in DFU mode in iTunes. You need to hold down the sleep/wake button and the home button. When you see the Apple logo, keep holding the home button until iTunes says it’s in recovery mode.
Then, install a new copy of iOS 6, followed by the beta iOS 7. Then you need to restore your data. You can always revert back to iOS 6 if you back up in iTunes first.
This iPhone 4S battery drain was pretty bad, with the phone lasting just a few hours, but you can avoid it simply by following these few steps. The drain problem seems to set in if you have restored data but don’t do a clean install beforehand.
Have you had the battery drain problem? How did you solve it?