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is bluetooth like gps in that unless its connected it won't draw battery?

Discussion in 'Android Devices' started by cabbie, Jun 16, 2010.

  1. cabbie

    cabbie Well-Known Member
    Thread Starter
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    Mar 23, 2010
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    Im fairly certain that wifi will draw battery by just being on but wasn't sure about bluetooth.
     

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  2. shappy

    shappy Well-Known Member
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    Mar 23, 2010
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    Automotive Industry
    Boynton Beach, FL
    I would like to know this as well
     
  3. Howie

    Howie Well-Known Member
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    Oct 28, 2009
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    IT
    Central NY
    I have left it on and left it off for full days and haven't noticed much difference. I'm sure it's still running since it has to look for a paired BT device to connect to when in range.
     
  4. kimrari

    kimrari Member
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    Apr 15, 2010
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    Bluetooth and GPS is a radio which draws power. Whether it is in active use or not, if the radio (bluetooth or GPS) is on, it will draw power.
     
  5. LS1

    LS1 Well-Known Member
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    Apr 12, 2010
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    GPS only draws power when its actively searching, period.

    Bluetooth takes about an hour off my days battery life, but I'm in and out of the car so much I don't mind.
     
  6. IPvFletch

    IPvFletch Well-Known Member
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    Jun 6, 2010
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    Austin, TX
    I leave GPS/BlueTooth/WiFi on 100% of the time. The three have no noticeable impact in battery life. I think WiFi actually HELPS (conserve 3G signal usage), and BT and GPS are just periodic heartbeats. Now with BT connected/paired, I don't know. It's likely a little more, but not much.
     
  7. coolguy949

    coolguy949 Well-Known Member
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    Jun 5, 2010
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    Interactive and Social Marketing
    Orange County, CA
    I've noticed Bluetooth really sucks battery power when there is nothing connected to it. It's worse than other devices I've owned. I used to leave BT on all the time before but I can't on the Evo. It has a noticeable drain.
     
  8. IPvFletch

    IPvFletch Well-Known Member
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    Jun 6, 2010
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    Austin, TX
    But when you can get 40 hours easily with BT on, why disable it?? :D
     
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