Battery was draining very quickly and the phone would shut off for no apparent reason.
Repair took longer than expected - the screws are so small making them difficult to both remove and replace. Also, the instructions on the battery glue were very confusing.
After one week of great phone and battery performance, results are trending down. The app I have on my phone to monitor battery performance after a week of "Excellent" is now showing "BAD".
My thought is that the phone must be infected and most likely time to replace.