I just recently joined Verizon from T-Mobile and I am happy I did the service is fantastic.
Well until I started having issues after an OTA update that was stated to fix the reboot issues and the 1+ text messaging issue.
If you are unfamiliar with either of these you've been a lucky Thunderbolt user!
With that being said I've been doing some testing with my device since I did not get a call back or follow up from Level 2 support on my account with Verizon (Not Surpised to be honest)...
So I am running 2.2.1 prior to the 73Mb OTA update that was suppose to fix the random reboots and text messaging issues. The text messaging issue is actually an issue with how the phone recognizes phone numbers with 1 infront of the number... if you are local and you remove the 1 from the number the text message goes through just fine (work around ofcourse).
So I installed the 76Mb OTA update 1.70.605.0on my phone and low and behold signal went from 3bars 4G LTE to no signal or a very weak signal ranging from 1X to 4G LTE.
I've done and tested this twice on my phone and confirmed the same thing results both times.
I really don't feel like going through this process again as it seems to be pretty straight forward - Installed update signal drops.
So you fixed the rebooting but now it messes up the signal - I also verified my buddy at work has the same phone hasn't updated his OTA because of responses and forums discussing this issue.
If any one has any questions please let me know or if they need help with this issue I can assist - Thanks.