iOS 7 A Battery Drain Pain For iPhone 4S, Leaves iPhone 5 Unfazed

We’ve heard a lot about the iPhone 4S’ battery life after it gets bumped up to iOS 7. It drains down a treat, infuriating owners, while the iPhone 5 seems untouched.

We heard from a few people who’ve updated and have found their iPhone 4S dying in just hours, so we looked into the problem and in our infinite collective wisdom found a solution.

Battery drain is a huge problem, and it’s something we saw after the iPhone 4S went up to iOS 6 last year. It’s not a hardware problem, it’s related to how you install iOS 7.

Tests showed that the iPhone 4S drained very rapidly, and the phones seem to be stricken at random, but it actually happens when you do the update under certain conditions. We know how to avoid these conditions.

You have to make a back-up of your phone in iTunes DFU mode, then do a clean installation of iOS 6. To enter DFU mode, hold down the wake/sleep buttons until you see the Apple logo. Then you must keep the home button depressed until you hit recovery (which sounds almost medical!).

When you’ve installed iOS 6, you can install iOS 7, then reinstall all your data. If you want to revert to iOS 6, you can do so, as long as you backed up in DFU.

The iPhone 4S battery drain problem is a huge one, but it’s easy to sidestep it by making a clean update then reinstalling your data.

Jasmin Johnson

About Jasmin Johnson

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Staff Writer // Jasmin has the patience of a praying mantis. She spends the day sifting through press releases from all the major brand’s PR reps. From the most ridiculous announcements to those you really want to know more about, Jasmin makes it a point to skim through as many daily as possible so you won’t have to.