Hello Vandyboy. Sorry to hear about the 4G service issues you are experiencing. What zip code are you located in, and what is the make/model of your phone?
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I'm in Arlington (22201), a stroll across a bridge from DC, and seeing similar issues. I normally get 18mb down or so, lately I've been dipping to 1.5mb for long periods of time (several hours). Moto X, unlimited data plan.
Called tech support and they said no known problems in my area, not sure what is going on, but I feel your pain.