I recently bought a lightly used 2017 D5. Now, I've discovered that it is only capable of receiving 3g data and that all providers in the U.S.A. are discontinuing all 3g networks. Went to my dealer seeking an upgrade only to discover that Land Rover has no approved replacement component or module that is compatible with the 2017 system that provides 4g LTE reception. I find it hard to believe that components or modules in the 2018 and newer models can't be used in my 2017 model? Anybody have any ideas or experience with this? Please advise.