[roxgib]

I think capacity is a big part of it? People consuming a lot more video at higher resolutions so while 3G might have been fine for the time we needed to upgrade to squeeze more bandwidth into the available spectrum. It wouldn't be so bad if phones were better and switching to the best available signal, they they could use the efficient 5G connection when it's available, but fall back to 4G when the 5G is blocked by a building or something (which I gather is more common due to the high frequencies used)