> seem to display 3G connections as if they were 4G

https://www.theverge.com/2011/05/04/536673/att-t-mobile-dipp...

AT&T has a history of lying about what its network is. They were advertising HSPA+ as 4G and then recently started advertising LTE as "5G E". I can't find a lot of articles about the 4G branding one since the 5G one started.

> show_4g_for_lte_data_icon_bool

Realistically I think this is just a choice that many carriers made. It's quite common to see 4G instead of LTE outside of the US. Technically speaking I think WiMAX counted as 4G when there were competing 4G standards and you could make an argument that LTE is just one of the 4G standards.