No. It’s not available to buy in the US and it’s not worth the effort. That’s the TLDR short answer.
Remember that the XA2 was only sold in EMEA i.e. not for the North American market. As a result, 4g frequency band support was only added for bands used outside of North America. There is some overlap but tbh it’s borderline non-existent.
The XA2 supports 4g bands
- 1, 2, 3, 4, 5
- 7 & 8
- 20
- 38
AT&T & T-Mobile only supports bands 2, 4 and 5 of those supported by the XA2. I’m not bothering with Verizon though their 4G LTE bands are in theory GSM and not the CDMA that Verizon previously used for 2g & 3g.
The following is my edit of Wikipedia articles for T-Mobile US and AT&T Mobility:
For T-Mobile, Band 2 is only used in rural locations for 2g to 4g conversion, and even then is actively being refarmed for 5G. Band 5 is only relevant if you’re in Myrtle Beach, South Carolina. Band 4 is the main LTE band but if full you’ve got no alternative.
AT&T - bands 2&4 are for additional capacity, band 5 is being refarmed to 5g is is unavailable in many locations. AT&T mainly uses bands 12 & 17, neither of which are supported by the XA2.
As an aside, there’s zero 3g on any US network. Only T-Mobile has 2g support and in theory that was to shut down on 2nd April. It still exists in places but I interpret their PR to basically say that they can end service without warning going forward.
I live in the US, and have an XA2 that I setup in early 2019 in the UK. I can’t test my XA2 with a local sim as the only one I have is now esim. But it took 30mins to actually connect to a 4G network on my UK sim card and even then it didn’t receive or make a call and had no data (I assume due to a lack of VoLTE support). That’s something that still works on my old Lumia 950, which is still on the AT&T VoLTE whitelist 3 years after I previously replied to this topic).
I’m not inclined to troubleshoot it at this point, especially since it’s had a battery replacement, and the new battery isn’t very good (but at least it isn’t swollen).
That’s before you have to find a workaround for tricking the Jolla shop into selling a licence to you without a European credit card. I don’t think it’s worth the effort and would at the very least suggest waiting for a phone that supports VoLTE (e.g. the 10 V).