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Thread: Voice calls use a lot of battery

  1. Senior Droid
    anewday's Avatar
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    #1

    Voice calls use a lot of battery

    Almost 1d 12h since last unplugged. Battery is 40% remaining. I haven't browsed the net and sent/received a few text messages.

    How can only 20m of voice calls use 21%?

    Phone Idle
    28%
    1d 10h 32m

    Cell Standby
    22%
    1d 11h 49m

    Voice Calls
    21%
    20m 39s


    Display
    17%
    1h 17m
    Last edited by anewday; 04-11-2010 at 01:44 AM.
  2. Droid
    Potty Time's Avatar
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    #2
    were you perhaps in a low signal area thereby causing the radio to have to work harder whilst you were in the call? voice call should indeed use quite a bit of battery but that 21% does seem quite odd (i would expect it to be in the 12-17% range personally)

    awwwwwww yeaaaaaaaaa 3g baby 3g!!!
  3. Master Droid
    dodgersrgood's Avatar
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    #3
    Quote Originally Posted by Potty Time View Post
    were you perhaps in a low signal area thereby causing the radio to have to work harder whilst you were in the call? voice call should indeed use quite a bit of battery but that 21% does seem quite odd (i would expect it to be in the 12-17% range personally)
    Off topic but are those speeds from your phone?

    The ones in ur sig that is
  4. Master Droid
    droidman101's Avatar
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    #4
    Quote Originally Posted by anewday View Post
    Almost 1d 12h since last unplugged. Battery is 40% remaining. I haven't browsed the net and sent/received a few text messages.

    How can only 20m of voice calls use 21%?

    Phone Idle
    28%
    1d 10h 32m

    Cell Standby
    22%
    1d 11h 49m

    Voice Calls
    21%
    20m 39s


    Display
    17%
    1h 17m
    That's 21% of battery used so it would actually be 21% of battery used which is 60% so the real % is 12.6%
    Edit: fyi sound takes a TON of energy to transfer
    Last edited by droidman101; 04-11-2010 at 02:31 AM.
  5. Droid Ninja
    jsh1120's Avatar
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    #5
    Quote Originally Posted by droidman101 View Post
    Quote Originally Posted by anewday View Post
    Almost 1d 12h since last unplugged. Battery is 40% remaining. I haven't browsed the net and sent/received a few text messages.

    How can only 20m of voice calls use 21%?

    Phone Idle
    28%
    1d 10h 32m

    Cell Standby
    22%
    1d 11h 49m

    Voice Calls
    21%
    20m 39s


    Display
    17%
    1h 17m
    That's 21% of battery used so it would actually be 21% of battery used which is 60% so the real % is 12.6%
    Edit: fyi sound takes a TON of energy to transfer
    I was going to mention this same point. It appears that many people misread the "battery used" statistics on their phones.

    The OP doesn't tell us whether the battery was at 100% when he removed it from the charger, but even if it was, he didn't use 21% of the battery making phone calls. He used 21% of the total 60% he had used making phone calls. And given his/her reported usage, the relative usage stats look about right.

    It's also worth noting that the battery used stats can be misleading in other ways. For example, 13% of the usage isn't reported in the figures above. It's not clear how this "other" use is related to the categories the OP reports. For example, where is the battery use for "text messages?" Is there a category for keyboard use? After examining these stats on my phone repeatedly, I'm more or less convinced that they're useful mainly for identifying some huge unusual battery drain and not much else.

    I might recommend experimenting with some of the other battery monitoring apps. One I've found that is relatively useful (emphasizing "relatively") is Battery Time where estimates of remaining time for particular categories (like "Talk time") are provided. It seems to provide something approaching a realistic view of battery use.

    Finally a couple of other suggestions. First, battery use is not linear. The 10% use between 100% and 90% is not the same as the 10% use between 50% and 40%. Trying to extrapolate from a percentage used over a period of time is extremely difficult.

    Second, those concerned about battery use would be well served by purchasing a second battery. (I picked one up for less than $15 on Amazon.) Before trying to figure out what the phone is doing, try different batteries and compare their performance. What may appear to be a phone issue may well be individual variation in batteries.
    Curmudgeon Member of Rescue Squad
  6. Droid
    Potty Time's Avatar
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    #6
    Quote Originally Posted by dodgersrgood View Post
    Quote Originally Posted by Potty Time View Post
    were you perhaps in a low signal area thereby causing the radio to have to work harder whilst you were in the call? voice call should indeed use quite a bit of battery but that 21% does seem quite odd (i would expect it to be in the 12-17% range personally)
    Off topic but are those speeds from your phone?

    The ones in ur sig that is
    yes sir!!

    awwwwwww yeaaaaaaaaa 3g baby 3g!!!
  7. Droid Sensei
    kodiak799's Avatar
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    #7
    Someone could do the math (I don't have all the numbers)....A voice call drains approximately 2-3 times the "battery" per minute of use (i.e., you'd get about 4-5 hours for voice on a full battery).

    So a 20 minute call could take approximately 6-8% of your total battery. 60% of your battery is gone, which equates to like 2-3 hours of voice call, so I'd expect your voice call usage to be between 11-16% of battery used.

    Maybe you had a weak signal (and/or 1G service) on that call?
  8. Senior Droid
    VideoGameMatt's Avatar
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    #8
    You should probably update your PRL (Preferred Roaming List) by dialing *228 and picking option two. That may help since it will give your phone an updated list of cell towers. It is wise to do this once a month since Verizon actually upgrades their network and builds more towers all the time

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