Chosen Solution
My Blu Vivo 5R has been stuck in a Restart / ‘Starting Android - optimizing app 1 of 1’ loop for several hours. The battery cannot be removed and I can’t find any workable solutions to reboot or access factory settings. I installed 2 new apps this morning (MyFitnessPal, Strava) and this has been happening since about an hour after that. Can anyone help?! If I could just get to the main screen I can uninstall the apps that seem to have caused the problem, but it won’t get that far in loading. It won’t connect to my PC to access from that side either. Any advice much appreciated!
At this point now that you can’t even load and get into your home screen, I believe the only thing you could do is factory reset the device and clear all the memory. Then restoring a backup of the data before the apps were installed if you have one.