first of all, big thanks and a tip of the hat to kelly kearns who helped provide the initial steps in my scientific method approach to this problem. 
problem: note 2 was hanging then rebooting every time i left a wifi area (most notably my home network) then switching to cellular data, or everytime I went to switch off wifi manually
theory: must be software related after exchanging the note2 for a fresh note2 from at&t after about one week of operation.
method:
1. safe booting note2 and observing wifi
2. observed different programs that were restarted after every hang/reboot sequence
3. noted in a spreadsheet all the different conditions (this spreadsheet has over 100 lines of entry for observations, control item changes, etc.)
result: after almost five weeks of trying to properly set up the note2 where it was not hanging/rebooting (believe me, i was missing my iPhone's simplicity and working correctly right out of the gate on day one) my study narrowed down the culprit to an at&t app.
solution: uninstall/remove from your device the AT&T VM Viewer (home voicemail viewer app) from your note2. The app was apparently trying to maintaing the network handshake/connectivity when it was lost and thus resulted in the hangup/reboot. if you are experiencing the problems I was experiencing, first disable the AT&T smart wifi app then uninstall the VM viewer app.
problem: note 2 was hanging then rebooting every time i left a wifi area (most notably my home network) then switching to cellular data, or everytime I went to switch off wifi manually
theory: must be software related after exchanging the note2 for a fresh note2 from at&t after about one week of operation.
method:
1. safe booting note2 and observing wifi
2. observed different programs that were restarted after every hang/reboot sequence
3. noted in a spreadsheet all the different conditions (this spreadsheet has over 100 lines of entry for observations, control item changes, etc.)
result: after almost five weeks of trying to properly set up the note2 where it was not hanging/rebooting (believe me, i was missing my iPhone's simplicity and working correctly right out of the gate on day one) my study narrowed down the culprit to an at&t app.
solution: uninstall/remove from your device the AT&T VM Viewer (home voicemail viewer app) from your note2. The app was apparently trying to maintaing the network handshake/connectivity when it was lost and thus resulted in the hangup/reboot. if you are experiencing the problems I was experiencing, first disable the AT&T smart wifi app then uninstall the VM viewer app.
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