Buy European

Check the 5g frequencies of the phone and the telephone company. Sometimes they differ for some frequency but that does not impact the phone too much. I had an Indian Nord and it worked flawlessly in EU although some frequencies were not supported

might wanna look through this thread https://forum.fairphone.com/t/fairphone-owners-in-the-usa-fp2-fp3-fp4-fp5/

I very well could be wrong, but if it doesnt go through FCC approval, the device itself might be blocked on US carriers. I hope I'm wrong, I'd love to see the ff5 here

I can say say first hand that pf5 works in the us. At the time I used T-Mobile, but no problems with connectivity.

T-Mobile is based in Germany, so cell service is still functional between continents.

Currently I don't have T-Mobile, but have the murena esim, they do utilize the T-Mobile network though. Haven't been in the US with the esim, but I can still use it fine on wireless or roaming

I've been using a FP5 on Mint Mobile in rural US for about a year maybe; It's worked pretty well so far. I get decent 5G in the (very) small town I live in, and decent 4G in most other places out in the sticks.

I don't see why not...