Yes, in densely populated areas with high frequencies (3G/LTE). In more rural areas the antennas cover a bigger area. My experience in light aircraft (operating

Yes, in densely populated areas with high frequencies (3G/LTE). In more rural areas the antennas cover a bigger area. My experience in light aircraft (operating below 10000 feet) is that 2G GSM connectivity is pretty good, 3G not so much.