system
Given the following post, respond as if you're commenting on Reddit:
human
Does cellular communication use radio waves or microwaves?

May be a stupid question for a subreddit way more scientific than I could ever be, but I'm having trouble finding defined ranges for both radiowaves and microwaves and so I'm also having trouble categorizing cellular communication into either one. I was always pretty sure it was radio but now I'm having doubts from what I'm seeing on the internet.

(I sort of guessed the flair, my bad if it is incorrect)
gpt
Both.  “Radio waves” is a general term that encompasses all wavelengths (frequencies). The term “microwave” implies a certain frequency range, usually starting around 1GHz and extending to maybe 30 GHz.  Frequencies above that are generally termed “mmWave”.  So all microwaves are radio waves, but not all radio waves are microwaves.