[Laos101]

3G is used for internet because its the most reliable method available to transmit data over radio signals.

in the end, with the right equipment, any form of radio transmitter can send data, but at different bit rates.

For example, a Ham Radio can be used to transfer an internet connection across a range as far as the transmitting and receiving antennas can perceive (although there will be a lot of heat emitted from the equipment). But you get something like a few bytes per second. In other words, it would take you hours to download a 10 KB set of data. This form of data transfer is used best for sending custom made data that is either compressed or converted into a code that can be decoded. This is getting REALLY into it though.

Anyways, to explain shortly, all communications use radio frequencies in different spectrums which range from MHZ, to GHZ. One of the popular ones you know is the 2.4GHZ frequency set, AKA WiFi

To add to the post below, I dont know why they dont allow communication, because it's honest B.S. They claim radio frequencies, which is seriously not true, there are enough communications on the same frequency for decades that still cause no interference, and as for being able to comprehend a problem occurring, thats a lie because nobody is ready for disaster and if there is disaster, they will be slow to respond. I guess complaints is the only possibility.