As I sit here in my livingroom, my Verizon Samsung S3 has 4G 3 bars, as always. Since I have had this phone, I have had 4G signal. I get 4G at Lochmere while golfing. Dining at Cactus Jacks, we had 4G. Cooking at the Lakeside, across from the Gilford Walmart, we only get 3G, and only one or two bars. Don't believe the latter is a service issue, only a line of sight problem between the location and a Verizon antenna.
FWIW.