What about the two blanked off uFL connectors that appear to be in-line with the onboard wifi antenna?

Can one modify those and use them?

I bought two of the XE300 units for two RVs, and need to have external connectivity for the Wifi and 4g, not just 4g.

As it stands, the on-board wifi is terrible at even connecting to my house network when parked outside (when a phone connects no problems at the same location…)

any help would be REALLY appreciated.