Take the 2-minute tour ×
Ask Different is a question and answer site for power users of Apple hardware and software. It's 100% free, no registration required.

I bought a used iPhone 3GS and the owner claims it worked fine with iOS 4.3.5.
When I came home, I reset all content and settings on iPhone.

Did I know that doing the reset would force me to upgrade to iOS 5.0.1!

Now that I have upgraded to iOS 5.0.1, the phone began to switch off randomly.
I can't recognize the pattern—it happens in different apps, with different intervals. The screen just goes blank, with a reflection of what was on it for a couple of seconds.

Sometimes it reboots on its own, and sometimes it just switches off and sometimes it says the battery is too low to switch back on. But I know this isn't true! Funny enough, in a couple of minutes it would go from claimed low percentage back to 76%.

The only pattern I observe is it always switches off when I'm walking on a street, and works fine in the room. But it may be a coincidence.

  • Could the battery fail because of the cold or movement?
  • Is this likely to be a software issue?
share|improve this question
2  
I just restored to a backup of another iPhone I own, and I will probably wait for 5.0.2. I'll post an update if any of this fixes the problem. –  Dan Nov 25 '11 at 13:53
add comment

1 Answer 1

up vote 1 down vote accepted

I tried jailbreaking and installing iOS 4.2, and the issue persisted so I concluded it's a hardware problem. After four months, I finally got the battery replaced, and the service guys told me there was a problem with the old battery's circuit.

The new battery works just fine.

share|improve this answer
add comment

protected by Community Dec 31 '11 at 18:01

Thank you for your interest in this question. Because it has attracted low-quality answers, posting an answer now requires 10 reputation on this site.

Would you like to answer one of these unanswered questions instead?

Not the answer you're looking for? Browse other questions tagged or ask your own question.