On this week’s show: Navman has released its first 4K dash cam – and they are saying it’s their best ever, we get behind the wheel of the new MG4 EV, why Mac users are being targeted by cyber criminals, we take a look at the DJI Air 3 drone, Nokia has released a sub $450 smartphone that you can repair yourself, Dyson’s Zone headphones, which we though were an April Fools Day joke when they were revealed, have now gone on sale in Australia and we’ll answer all your questions in the Tech Guide Help Desk.