Thanks for the suggestion. Based on an earlier suggestion ( AJ4GQ ) I tried connecting my cell phone to my satellite-based internet wireless router. Connected fine, but my phone would not use the wifi for text or voice ( even in airplane mode ). Works fine on my daughter's phone but not on mine. Internet search revealed that my smartphone can't do texting by wifi without a third party app. So rather than buy a new phone or install another app, we installed a cell phone booster ( $550 ) and we now have a reliable 4G signal at home. Was -120 db with once-in-a-while service for a few seconds at a time. Now -90 db with little variation in signal strength or connectivity. So hopefully that problem is resolved. Fortunately my son is here for the weekend and was able to help me with this project as I am not able to climb on a ladder.