I was looking for some information on my Note II (VZW) so I powered off my phone and removed the battery to see the labels under it. I replaced the battery and powered the phone back on. About 30 seconds after the phone completely came back up, it rebooted. This went on continuously for about 20 minutes, so I pulled the battery again, removed the SIM and powered back on. Same result. Removed battery, reinserted SIM, removed the SD card, no more rebooting. Reinserted the SIM with the phone powered on, and in about 30 seconds, reboot. Once the phone came back up I quickly went into the settings and formatted the SD card, problem solved.
It was just strange that I've had that same SD card in the phone (Kingston 64gig SDXC10 card) since I got it and I've not modified the contents of the SD card lately.
Anyone else come across this?