LTE-M1 in Puerto Rico

We have a couple of customers who are using our devices with embedded Boron LTE devices in Puerto Rico. Late last year, AT&T apparently sold (all? some?) of their operations in PR to a local firm called "Liberty". Shortly thereafter, our customers could no longer connect over cellular.

Does anyone if there are any plans for Particle to re-establish LTE-M1 coverage in Puerto Rico anytime soon?

Any and all help greatly appreciated.

Which device? In any case, it's unlikely because we never listed LTE Cat M1 as being supported in Puerto Rico, and we're limited by our provider's list of carriers, and they don't have an agreement with Liberty directly.

These are Boron devices (BRN404X). It's a little frustrating for our customers as they were working just fine before the sale to Liberty, so all of the tower/carrier/connectivity capability is clearly there. Just a missing business relationship/service agreement. Well, hope springs eternal.

There was some talk about T-Mobile deploying LTE Cat M1 in Puerto Rico and the BRN404X should be able to connect to that if true.

Thanks, that sounds promising. Do you know if there's any mechanism for interacting with T-Mobile to inquire how about how real their Puerto Rico Cat M1 deployment is? Happy to do at our end, just looking for guidance on where/how to approach them.