Reminders App Hard On Battery?

Discussion in 'iPhone' started by Futhark, Oct 5, 2011.

  1. Futhark macrumors 65816

    Futhark

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    Jun 12, 2011
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    Northern Ireland
    #1
    This is the first time I've tried the iOS 5 reminders app, I can see how this might be useful but what I want to know could this be a battery killer?

    I setup a reminder for tomorrow morning when I leave home to remind me to stop off at the shop for something. I noticed because I'm setting the remind by location rather than a day and time the location service icon is constantly up by the batter icon. Surely if this is a reminder that is hours away or days away and your not on charge your battery will be dead in no time?

    Please correct me if I'm wrong in what I'm thinking.
     
  2. Menel macrumors 603

    Menel

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    ATL
  3. Menel macrumors 603

    Menel

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    ATL
    #3
    This is not new info.
     
  4. Bkfraiders7 macrumors member

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    Sep 4, 2011
    #4
    I was under the impression it used cell towers to track your location rather than GPS. So the only power it would be using is when it checks into a cell tower (which it does frequently) and deciphers your location from there at no expense to the battery.

    I could be wrong though
     
  5. Futhark thread starter macrumors 65816

    Futhark

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    #5
    This answer doesn't help me any :D
     
  6. drb1992 macrumors 6502

    drb1992

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    Oct 4, 2011
    #6
    If this is possible then it is probably how Apple did it, considering they are all about battery life and all that.
     
  7. mikethebigo macrumors 68000

    Joined:
    May 25, 2009
    #7
    I'd say it's safe to assume that it doesn't kick on the GPS until you're pretty close to your destination. Until then, it's just tracking you with cell tower triangulation, which as we recently found out, the iPhone has been doing in the background for a while anyway.

    Shouldn't be a big battery issue.
     
  8. Futhark thread starter macrumors 65816

    Futhark

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    Jun 12, 2011
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    Northern Ireland
    #8
    Thanks for this info. I was scared to goto work this morning with the reminder set when I saw the location service icon as I didn't want my phone running low after a short space of time. I'll try it again and see :)
     
  9. GfPQqmcRKUvP macrumors 68040

    GfPQqmcRKUvP

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    #9
    What has the battery life been like with a location reminder activated?
     
  10. Futhark thread starter macrumors 65816

    Futhark

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    Jun 12, 2011
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    #10
    I'm setting a reminder tomorrow morning and giving it a location I know I'll be arriving at 8 hours later.

    I'll keep you posted on any battery drain
     
  11. emir macrumors 6502a

    emir

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    #11
    will be waiting for that post, thanks
     
  12. Futhark thread starter macrumors 65816

    Futhark

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    Jun 12, 2011
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    #12
    Just did a quick test with reminders. I set a reminder for me arriving at my wife's workplace 45 minutes away from home and on arrival it beeped the reminder the very second I stepped through her premises door, I didn't think it was working as nothing happened as we pulled up outside but as I said above it notified me the minute I was inside.

    So for a 45 maybe 50 minute journey my battery went down to 94% a usage of 6% what do you think?
     
  13. apprunner macrumors regular

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    Jun 26, 2010
    #13
    Thats lousy.
     
  14. Kyotoma macrumors 68000

    Kyotoma

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    Carnegie and Ontario
    #14
    That's actually about average if you're constantly using data.
     
  15. apprunner macrumors regular

    Joined:
    Jun 26, 2010
    #15
    Yeah but the reminders is supposedly dormant until called for. This battery drain makes it dramatically less useful. Too bad.
     
  16. GfPQqmcRKUvP macrumors 68040

    GfPQqmcRKUvP

    Joined:
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    Location:
    Terminus
    #16
    Can you have the Reminders app notify you for a future date and location?

    "Remind me on Friday when I get to work to print out my slides."

    If so, is location only used when Friday comes around?
     
  17. Futhark thread starter macrumors 65816

    Futhark

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    Northern Ireland
    #17
    Yes here's how it works

    [​IMG]
     
  18. shockwave562 macrumors newbie

    Joined:
    Aug 1, 2011
    Location:
    Denver
    #18
    I thought I would try this out today as I was curious as well. Using my iPhone 4 I set up a reminder to go to the store after I leave work today at 5PM. I set the reminder at 9AM and currently about 6 hours have passed.

    The battery started at 99% when I set the alert and right now it is at 93% with less than average use throughout the day (checked one email and sent a couple of texts).

    To be quite honest I think a loss of 6% is negligible considering how cool the reminders app is. I'll be especially excited to use this with Siri, as I find it time consuming right now to create reminders.

    To the OP, I would point out that it would be silly to remind yourself of something on a future date without both selecting "remind me on a date" AND "remind me at a location"

    The reminders App is smart enough not to start the GPS until the date of the reminder. If you want to get milk from the store by 5PM on Friday, you will set it up as such. Location services will not go on until Friday and you will be reminded either when you arrive at the store, or by 5PM at the latest.
     

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