Unfortunately, as I described in another thread ("4G not that fast / slow service in New York City") this has affected several devices I've owned and it only happens in New York City (look at zipcode 10019). This doesn't happen when I go home at night, and it has affected all of the following devices in the past few months:
(current) Droid MAXX
Droid RAZR MAXX HD
Samsung Galaxy S3
Samsung Galaxy Note 2
This also affected my mifi, before I suspended the line of service.