My brief experience with Sprint a couple years before the T-Mobile merger had basically unusable coverage. Was genuinely surprised how far it had fallen.
Source: used to deal with permits for them in a metro area.
Ultimately they got some assets in the merger though
Right now I am in small town south GA and getting 120/40 on cellular.
The universe enforced me being unreachable outside of work hours and I didn't mind that at all.