Phone as gps

I have had two Garmin's in the last 10 years of travel and they worked OK. I was about to buy the new RV specific Garmin 760 for $400. After weeks of researching this and reading about problems with both the Rand and Garmin I decided to try the Copilot app for $6.99. My thought was that if it did not workout I'd buy the new Garmin. After using it for 6 mos I would never spend another $400 for a dedicated GPS that has to be updated and needs to be replaced every 5 years or so because of technology chg's or battery's failing. The maps on these are constantly being updated(2 or 3 times in 6 mos). I downloaded the entire US maps at home on WIFI so it used no data. The I phone and Android both have built in GPS so it does not use cell towers or data, I get a new phone every 2 years any ways for free with a 2 year contract, so I no longer worry about hardware or battery failure of a dedicated gps. It has height restriction for low bridges and propane restriction for tunnels also. The maps use 2.1 GB of data so a phone with 5 or more GB is needed. It also comes with a free live traffic update for 6 mos which I liked, and found it just as useful as the GPS function. I have been trying Waze and Google Maps which also shows the traffic patterns for free but this function does use your data.