Just popping back in here...i honestly didnt read everyones posts...but i see alot of confliction...
between my wifes viper and my viper, we had ours replaced, overnighted, (no insurance), a total of 6 times. (mine 4x, hers 2x), Now i have a free airave , and two Gnex's.
Tip: Google Sprint Account Executive direct #'s, I randomly found one that worked, and w/in 5 minutes he took care of everything i needed.
Note:, all 6 replacement vipers, I did not pay a penny, and i have never had insurance on my lines.