They did quite well for 3G and even 4G which didn't have as many above 2.4GHz , but after 4GLTE, 5G has added a lot of mid-bands between 2.6-6GHz. Those tend to leak more since they have shorter wavelengths than microwaves are built around 2.4GHz. Some of them are only used in a few countries, but n2 & n77 are widely used by ATT.

https://en.wikipedia.org/wiki/LTE_frequency_bands

https://en.wikipedia.org/wiki/5G_NR_frequency_bands

You gotta take that phone out sometime though to heat up your ramen.