True in the last year or so (been with sprint well over 7 years) I have not had too many dropped calls, more just horrible reception both on rooted phones and non rooted phone but I see a quality increase with the LTE in town. I do a lot more "country" driving I guess where reception isn't so good. Right now when driving around the neighborhoods in Roch I am lucky if I get 2 bars of 3G but when I lock 4G, easily get full bars.
Yes, Rochester (thank god) is starting to get a plethora of LTE coverage but again, it's about 5 blocks away from my house right now and when I do go to the covered areas I am lucky if I get a lock then I drive out of it.
And I try my hardest to map the LTE on sensorly but sometimes when I am connected sensorly doesn't get a ping. Then two blocks later it drops. So I know and understand it's still a few months away from being solid. I am just happy to see progress!!