Not for the first time.
However, I spotted this on a Samsung blog this AM
Past weeks was some time ago in 2017 but I had a download the other day which rebooted the phone.
Any comments folks?
After the "Update Complete" the drain on the phone battery will occur at a rate of about 8% per hour and continue until the background update completes. I suspected and confirmed that this background update was sending the update files through an "over the air" channel, not the data channel nor the WiFi. How did I figure this out? When the battery was draining, we turned off all of the radios (airplane mode) for about 30 minutes. The battery draining ceased. When we turned the network (voice) radio back on without data mode enabled, the battery drain began again. The update finished after about 2 days for this past weekend's update. The "update complete" message needs to include a message that states, "Expect heavy battery usage to occur for the next 1-3 days to complete additional update operations. Plan to charge your phone continuously during this period of time."