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Power consumption - wifi, bluetooth, network, gps e.t.c.

Discussion in 'Android Lounge' started by JoshS, Nov 27, 2009.

  1. JoshS

    JoshS Lurker
    Thread Starter

    If you had to assign a percentage (0-100) on how much power the following functions uses, what would you set?

    We can assume we are using an average android 1.6 device.

    Please include a motivation as well.

    * Flight mode (i.e. all other features turned off)
    * GPS
    * WiFi
    * Mobile network (2g)
    * Mobile network (3g)
    * Bluetooth

    For me, I would probably set something like

    Flight mode 20% - the basic power consumption when almost all functionality is turned off.

    GPS - 0% when turned off and 20% when turned on. It might be even higher when it is used perhaps? As I understand it GPS is always turned off when it is not actively used.

    WiFi - 8% when turned on but not actively used and 13% when turned being actively used.

    2g/3g network connection 9%-14% The higher number for 3g. 3g uses more power especially when talking, at least for other terminals, not 100% sure about android.

    Bluetooth - 4% . Bluetooth shouldn't use so much power.. Maybe 4% is too high.

    What I need is approximate figures so that I can get a feeling (i.e. it does not need to be that exact but the feeling should be somewhat right) on how much power is used when different features are turned on. I know that some approximations will have to be made.

    If the total is 100% it represents that the battery is drained at the maximum possible speed. In my example above a phone with 3g and no other functionality enable would take have 34% power consumption (20% + 14%).

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  2. JoshS

    JoshS Lurker
    Thread Starter

    Does wifi turn itself off automatically in Android after a while when it has been connected to a wifi network for a while with no activity on the connection? It seems like that to me, I tried it just now..

    The gps is only active when is used I think so maybe there is something similar with wifi.

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