I have had the same issue from Pelham Manor up to the Morris Park area in the Bronx. In December, I was getting some pretty nice LTE speeds and coverage (even indoors) on my Note 2 and then after Xmas, it was gone. There is some LTE in some parts of Bay Plaza but it's not very fast. Pelham Manor is now non-existent (I was able to compete with my Girlfriends Verizon LTE phone speed while it was up) and the last time I was in the Jacobi area about 2-3 weeks ago..the LTE was also gone. Again, in December it was fine in that area. Weird...
For those in the know: Is it normal for Sprint to turn off LTE towers that seem to be working fine??