I'm old school, so I fitted a Pioneer AVIC-Z620BT, ex demo unit, in place of the oem, I then fitted a 2nd hand Kenwood radio in the centre console cubby & a cd changer under the passenger seat, that allows me to play my CDs or listen to the radio or even play Amazon music via the head unit, There is a built in satnav with updates yearly, have to pay after the 1st update, it also has a trip computer which I have never used, I can also mirror what ever is on my phone screen onto the head unit, I fitted new cameras front & back as the originals where 6volt and poor quality, I had to get a loom for the steering wheel controls but that is just plug & play, I also fitted a 3 position switch so I can have the audio on the leisure or main battery, all in it took a while but it works for me. There are Android units on the market that look like a Tesla screen but imo they are over the top. BTW the G on the tailgate just denotes the Toyopet dealer network that sold it in Japan