Hello people.
Yesterday, my trusty phone (Sony C6802, running under Android 4.4.4 build 14.4.A.0.108, rooted, debloated, and rockstable) began to randomly reboot itself. This was caused by a fake/shitty app, which I installed for testing purposes–I realized it is fake only after the installation, although I had suspicions beforehand.
I immediately uninstalled the fake app, rebooted manually, and checked for suspicious running processes and apps, but this doesn't stopped the random reboots every 15 ~ 40 minutes. After a lot of frustration I went to sleep, thinking how much time will be lost for fresh factory reset, rooting, debloating, restoring and reinstalling...
This morning, the phone was still rebooting like crazy. I turned it off,
took out the SIM card, cursed my naive stupidity–installing suspicious, fake app–and turned on the phone without the SIM. Alleluia! The reboots were gone. I inserted again the SIM, and the phone is back to normal - stable as the Pyramid of Khufu.
Never install suspicious apps!
Best regards.