LG K20 Plus Battery drain after recent security update

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    On 9/2 I ran the security update provided OTA.

     

    I'm now at Security patch level August 1, 2018.  Kernel 3.18.31, Software Version TP26011f

     

    I noticed immediately that my battery drains extremely fast, almost 1% per minute at idle. 

     

    A quick search turned up that the 'T-Mobile' app was using a lot of power, so I simply 'stopped' it.

     

    Are there any other known issues?  This is the first time I've sen this type of issue, i can normally go 8+ hours without charging my phone.

     

    Thanks,

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