mobile

I dialed *#9090# or *#0909# and selected option 1 to try to get in diag mode, the phone restarted and reboots every 2 minutes now . I next tried to factory reset, flash to stock with odin and different firmwares and the same result now it resets at the activation screen also tried a cache reset and factory wipe in between
there is also no signal just jyi verizon note 4 (sm n910v)
any ideas