Correct in everything you said. After battery extraction/insertion phone boots up normally and allows all apps and tasks. Allows normal charging as well. Keep the phone on and next time I look at it, there's the green robot again.
Originally Posted by
B. Diddy Welcome to Android Central! Did this all start with a system update notification? You're correct that the phone hasn't had an official update in a long time.
You said that when you pulled the battery and then restarted, it worked for a while, and then the robot showed up again. So you mean it booted up normally, and you were using apps and calling/texting people without issue, then suddenly it went back to that screen?