I would buy the Fairphone 5 in a heartbeat if it had an upgradeable modular telcom radio that we can pay extra for the extra frequencies if we want the module. (Or just came with the 5G bands)
5G bands: 1, 2, 3, 5, 7, 8, 12, 14, 20, 25, 28, 30, 38, 40, 41, 48, 66, 71, 77, 78, 257, 258, 260, 261 SA/NSA/Sub6
The reason I did not upgrade to a Fairphone 4 was the lack of 5G bands. I travel a lot and routinely switch sims, so I had to buy a pixel 6 pro to use 5G reliably.
Please do NOT switch to e-sim. The physical sim cards are independence.