01-29-2017 01:05 AM
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  1. PatentPower's Avatar
    01-24-2017 06:56 PM
  2. B. Diddy's Avatar
    It looks like a signal issue. The most telling screenshots are the two graphs from GSam. The one with the Cell Signal shows that it's pretty mediocre, and even plain poor, during the morning and early afternoon. The other graph shows that the phone is relatively idle during this time, so active use doesn't explain the battery use. The cell signal improves in late afternoon, which correlates with increased usage (the screen and wi-fi are on for most of this time), which also corresponds to the steeper drop in battery (which is expected).

    The fact that Cell Standby is still relatively high on the list supports this theory. It may say that the time without signal is 0%, but that's only when there's no signal at all -- it doesn't tell you how long signal is poor, which causes the phone to work harder to maintain the connection.

    I would at least turn off mobile data overnight, and if you don't need the phone to receive any emergency calls, you could also just turn on Airplane Mode overnight.
    01-25-2017 05:31 PM
  3. PatentPower's Avatar
    It dropped all the way to the bottom in the morning because there was bad signal so I put it in airplane mode, which is why it shows 0 signal.
    01-29-2017 12:11 AM
  4. B. Diddy's Avatar
    Right, so if you keep it in Airplane Mode whenever you have really bad signal, your battery life would probably improve somewhat.
    01-29-2017 01:05 AM
29 12

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