Recently, I went to a road trip from Brisbane to Coffs Harbour, that is about 5 hours driving distance from Brisbane. I found I got the 4G connections in major towns, such as Byron Bay and Coffs Harbour. Also, even the small towns, such as yumba, I got 3G connection and I got a stable 3G connection when I travelled on Pacific Highway. That is not bad, a few years ago, there were a lot of back holes of mobile connections. So, I used the Google Map as a primary navigation system and GPS as the second. Google Map is even better, the Map in my GPS is quite old around 2011. A lot of sections in Pacific Highway have changed, GPS cannot work very well in those sections. I has to use Google Map. Another advantage is Google Map has the live traffic data. It helped us to use a different route in Gold Coast for avoiding traffic.