I use T-Mobile for my personal phone and travel to some pretty remote locations for work where my reception is spotty at best... however, my work phone is Verizon and stays pretty strong almost everywhere. I find myself using my work phone as a hot spot for my personal, which is quite annoying. Am I understanding that I could put my work sim in either the Xs or Xs Max and use both carriers while traveling around in the IS? No more poor coverage areas?