iPad Pro Does Bluetooth in Pencil switch of when disconnected?

Discussion in 'iPad' started by imagirlfriday, Oct 16, 2016.

  1. imagirlfriday macrumors member


    Sep 19, 2016
    I was wondering when the Pencil is not connected with the iPad is it still emitting radiation or is it automatically switched off. Does anyone happen to know about the technical background of Bluetooth devices. (I know it's not that dangerous, I'd just like to know if this thing is on or off.)
    Thanks a bunch!
  2. Precursor macrumors 6502a


    Sep 29, 2015
    It switches off when it's unmoved for a couple mins. It activates when it's moved, looks for a bluetooth signal (no matter if the iPad has bluutooth turned on/off). So the key is putting it aside when not in use. This also conserves battery and prevents battery wear on the pencil.
  3. A.R.E.A.M. macrumors 6502

    Nov 12, 2015
    Los Angeles, California
    and after some point it will disconnect and you will have to repair it (just plug it up to the port on the tablet).
  4. imagirlfriday thread starter macrumors member


    Sep 19, 2016
    (I'm sorry I kept forgetting to log back in here) thanks that makes a lot of sense!
  5. snowman1 macrumors regular

    Mar 17, 2010
    One additional, subtle point is that the pencil will still be in extremely low power mode (using almost zero power) even if the pencil is being moved, as long as the iPad's screen is locked (off). For example, I keep my pencil and my iPad in my backpack all the time, and even when I am walking around with my backpack, the pencil is still connected via bluetooth because of the motion. Despite this, it uses almost no power at all because my iPad is not being actively used.

    Most of your pencil's battery usage will come from when (1) the pencil is connected via bluetooth and (2) the iPad is being actively used.

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