I will say from my experience
From me to the area of 4G coverage (according to card MTS) where the 1-2km, i.e. I'm not in the coverage area. But with antenna 4G (here such
I get a signal (more signal/noise) by 5-10dB (one stick of the stick).
4G antenna with such speed is the same or higher than 3G. And Yes, 3G it also increases.
But sometimes (a few times a month) the signal is lost altogether or is so bad that the speed drops. And Yes, I have all the farm is located on the third floor on a hill, and between me and the tower of the high forest.