4 ms·

"Never heard of such a problem on an iPad." My iPad has now reached the point where, if I don't carefully set it into Airplane mode, Battery drains in 24 hours

"Never heard of such a problem on an iPad." My iPad has now reached the point where, if I don't carefully set it into Airplane mode, Battery drains in 24 hours, even when asleep. I don't know if it's my mail client, or a background task being woke up by a geofence, or one of the GPS/WiFi radios - but I can't reliably leave it sitting around for several days anymore. So, now I get into the game of "Disable Location Services for All applications, Disable Notification Services for All Applications, Turn off all Radios - NOW, turn on a small handful of services, and observe for a week - if everything looks good, turn on some more - keep doing so until the battery starts draining in 24 hours, and then try and identify the errant applications" My #1 gripe about the iPad continues to be battery draining because of background tasks. If I could only "Force" the iPad into NO MULTITASKING, Single Damn Application at a time and NOTHING else mode, Don't Check Email, Don't Check GPS, Don't play music, Don't Download - I'd be happy. The only reliable way I've found of guranteeing this is to power it down - but it takes a long time (90+ seconds) to power it up each time I want to use it, which kind of detracts from the device... So, no - iPad is not perfect. I would say 50% of my time this trip, when I went to use it, battery was completely dead so I ended up with my MacBook Air sitting on my chest to do reading.

aero142 13y ago
Yours is broken.
- ghshephard 13y ago
  The hardware is fine - if I put it in Airplane mode, or, carefully disable every single background process, then it can sit in sleep mode with little battery loss, for a week. I guess another way of double checking this, is just reinstalling the Operating System from scratch at the Genius Bar.
  - Steko 13y ago
    Well it's either broken hardware or severely misbehaving software. There's a free app called Carat that you can use to monitor apps for battery hogs.
    - workbench 13y ago
      It's not possible for software to misbehave on iOS. The system is ridiculously strict and "background processes" are basically faked and can only run for 10 minutes before they're killed. Clearly the poster has a faulty battery.
      - Steko 13y ago
        That's not clear at all because he states that the battery works fine when he runs it in airplane mode. If anything is clear it's that he uses a setting that activates the radios too often or an app that spams notifications. Without knowing anything else about his setup I'd implicate a busy push email.
  - eclipxe 13y ago
    Or you know you could reinstall iOS via iTunes pretty easily. Why do you need a genius bar? And by carefully disabling every background process - what exactly do you mean? Other than mail checking - what user controllable background processes are there?
    - nwh 13y ago
      There's none. "Closing" apps in the multitasking switcher is more of a placebo than anything, the apps in it aren't running anyway. (The exception is VOIP and GPS apps, but they are not likely to be enabled without the user either being on a call or geting directions to somewhere.)
      - ghshephard 13y ago
        Closing Apps in the multi-tasking switcher has been the only way, on both the iPhone and iPad, to save your battery when apps on iOS run out of control. I certain I'm not the only person who has felt their iPhone get hot, and shut down everything in the switcher to recover the and stop the battery from draining? Likewise with the iPad, making sure every music, every voip, every downloading, every geo-fence, every GPS, every-single-app is shut down is the only way I can keep my iPad Battery from draining after running a good handful of apps. That, or just powering it down - which, as I said earlier, kind of defeats the purpose....
  - workbench 13y ago
    iOS doesn't even have background processes. if you run an app and switch out then it can perform a network operation or a few other very specific tasks but they're all killed after 10 minutes anyway. The whole multitasking part of iOS is basically smoke and mirrors. Manually quitting tasks is pretty much voodoo at this point
- eclipxe 13y ago
  Yeah seriously. What apps do you have installed?
sjs1234 13y ago
https://www.usenix.org/conference/hotdep12/collaborative-energy-debugging-mobile-devices https://www.usenix.org/conference/hotdep12/collaborative-ene... shows a research app that may help you debug your problem.

aero142 13y ago

Yours is broken.

ghshephard 13y ago
The hardware is fine - if I put it in Airplane mode, or, carefully disable every single background process, then it can sit in sleep mode with little battery loss, for a week. I guess another way of double checking this, is just reinstalling the Operating System from scratch at the Genius Bar.
- Steko 13y ago
  Well it's either broken hardware or severely misbehaving software. There's a free app called Carat that you can use to monitor apps for battery hogs.
  - workbench 13y ago
    It's not possible for software to misbehave on iOS. The system is ridiculously strict and "background processes" are basically faked and can only run for 10 minutes before they're killed. Clearly the poster has a faulty battery.
    - Steko 13y ago
      That's not clear at all because he states that the battery works fine when he runs it in airplane mode. If anything is clear it's that he uses a setting that activates the radios too often or an app that spams notifications. Without knowing anything else about his setup I'd implicate a busy push email.
- eclipxe 13y ago
  Or you know you could reinstall iOS via iTunes pretty easily. Why do you need a genius bar? And by carefully disabling every background process - what exactly do you mean? Other than mail checking - what user controllable background processes are there?
  - nwh 13y ago
    There's none. "Closing" apps in the multitasking switcher is more of a placebo than anything, the apps in it aren't running anyway. (The exception is VOIP and GPS apps, but they are not likely to be enabled without the user either being on a call or geting directions to somewhere.)
    - ghshephard 13y ago
      Closing Apps in the multi-tasking switcher has been the only way, on both the iPhone and iPad, to save your battery when apps on iOS run out of control. I certain I'm not the only person who has felt their iPhone get hot, and shut down everything in the switcher to recover the and stop the battery from draining? Likewise with the iPad, making sure every music, every voip, every downloading, every geo-fence, every GPS, every-single-app is shut down is the only way I can keep my iPad Battery from draining after running a good handful of apps. That, or just powering it down - which, as I said earlier, kind of defeats the purpose....
- workbench 13y ago
  iOS doesn't even have background processes. if you run an app and switch out then it can perform a network operation or a few other very specific tasks but they're all killed after 10 minutes anyway. The whole multitasking part of iOS is basically smoke and mirrors. Manually quitting tasks is pretty much voodoo at this point
eclipxe 13y ago
Yeah seriously. What apps do you have installed?

sjs1234 13y ago

https://www.usenix.org/conference/hotdep12/collaborative-energy-debugging-mobile-devices https://www.usenix.org/conference/hotdep12/collaborative-ene... shows a research app that may help you debug your problem.