1. Jonathan R's Avatar
    For the past couple of weeks I've noticed that my battery has been draining more than normal. It's not inconsistence - 2 days ago it used 20% of my battery, yesterday 4%, today it's back up again.

    I connect to Bluetooth headphones for about 2 hours each day. In the morning I checked and the CPU usage time was right (about an hour). But a couple of hours later it started creeping up.

    As shown in the images, Bluetooth is on but is not connected to anything nor should it be scanning. I've used an activity monitor and it's not clear what is using it and it's driving me mad.

    As you can see from the timings it seems to be using about 1sec of CPU time every 2sec. I had cleared all apps and even a reboot makes no difference. I've scanned for viruses too.

    Looked online but couldn't find anything.

    KeyOne, Android 7.1.1 security patch 5Sep17.

    What's draining my Bluetooth even when it's disconnected?-screenshot_20171109-130047.jpg
    What's draining my Bluetooth even when it's disconnected?-screenshot_20171109-131533.jpg
    What's draining my Bluetooth even when it's disconnected?-screenshot_20171109-133714.jpg
    11-09-17 08:12 AM
  2. Dunt Dunt Dunt's Avatar
    If Bluetooth is on, it's always scanning.... for devices it can connect to.

    As suggested, if you aren't using Bluetooth, turn it off.
    11-09-17 08:44 AM
  3. Jonathan R's Avatar
    Thanks but it doesn't explain why it is suddenly draining so much of my battery and why some days are worse than others. I use Bluetooth throughout the day so it'd be more convenient not to have to manually switch it off and on.
    11-09-17 08:49 AM
  4. FF22's Avatar
    Have you tried one of the reboot/restart methods.

    Generally Priv=KeyOne

    From BB blog: How to reset PRIV by BlackBerry | Inside BlackBerry Help Blog

    Three restart/reboot methods

    The first method, which should be used 99.9% of the time when you want to reboot your device, is using the Reboot option that appears after pressing the Power key.

    Press and hold the Power key for 3 seconds
    Select Reboot from the menu that is presented

    The second reset method should be used if pressing the Power key does not produce the menu with Power Off and Restart. For example, if an app or game you are using won’t close, use this option to restart your device.

    Press and hold the Power key for 12 seconds

    Third method: Should your device fail to respond, the final reset method is to press and hold the Power key for 32 seconds which is equivalent to removing the battery. This should result in your device booting up successfully.

    If it fails to start, however, verify you are not pressing any other keys such as Volume Up, Mute, or Volume Down while performing any of the reset methods listed above. If you use a case for your device you may want to remove it as it might be pressing a button inadvertently.

    And just for an extra measure, if needed:

    Safe Mode:

    The next step is placing your device into safe mode.

    When used, Safe Mode will disable any third party apps or games you have installed. As a result of this, should your device not exhibit the issue while in Safe Mode it’s safe to assume the issue is specific to an app or game you have installed. Safe Mode may also remove apps and/or widgets from your various home screens when you go back to Normal.

    Press and hold the power key
    Tap and hold Power off (that is Press/Hold the Power Off prompt line) when it appears
    When prompted, tap OK to reboot to Safe Mode

    To get out of Safe Mode, press and hold the power key followed by tapping Reboot.

    After testing, should your device not exhibit any issues, the next step is to remove recently installed applications one by one until the issue is resolved.

    If that fails you might investigate reloading the OS using an Autoloader:

    11-09-17 03:38 PM

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