Another thing worth mentioning, although its a niche, is that if you have an Icom ID-5100a HAM Radio with the bluetooth adapter, you should be able to install the RS-MS1I app for Android on the Grom and control the radio from your factory screen. This is what I was planning to do with the Phoenix Automotive product, but it should work just as well on Grom. You should also be able to load the APRS.fi and QRZ apps as well. With a dedicated 4G LTE hotspot and a good external antenna, this setup could be as good as it gets.