4G coverage strength better than 3G?? NOT speed, but strength

[Gordon21]

Once Verizon adds 4G transmitters to their existing towers using new frequencies, will we see better/farther strength signals. I know that different frequencies travel better, but is there enough of a difference at 700mhz to get a stronger or better signal than the current 850/1900 standard??

My point is that if you have a weak or faint signal 3 miles from an existing  3G tower, will it be better when you have a 4G device and 4G equipment on that tower.