You'd probably see higher than 'normal' (that's relative tho, obviously) battery drain. I certainly notice this when I use my phone at home (weak signal mostly) Vs when I'm out & about (much better signal). Never known of this sort of thing to cause shutdowns though, unless there's some kind of firmware or hardware issue which gets triggered by weak mobile signal (again, never heard of such a thing) ?
If it's important enough to cause you grief if it's lost, back it up. No excuses
Trolling for thanks is lame
Does Samsung's auto-brightness implementation crap drive you to self-harm ? A solution !
Most retarded thread on XDA in 2013