Hi Guys, if anyone is considering 1 of these units, I managed to find a seller on Ali Express that's ship's from the EU and works with the 3G basic that's fitted to pfl A4'S. Works well with iPhone and my S10, fitted in less than an hour and supports wireless car play and cameras.
These units are not the best but can add a nice bit of functionality to an older car for not much money.
£173.12 30%OFF | Wireless CarPlay Interface Box For AUDI A5/A4 Original Screen Upgrade MMI System Support Mirror Link Aftermarket Camera
https://s.click.aliexpress.com/e/WKFz5xO9V
These units are not the best but can add a nice bit of functionality to an older car for not much money.
£173.12 30%OFF | Wireless CarPlay Interface Box For AUDI A5/A4 Original Screen Upgrade MMI System Support Mirror Link Aftermarket Camera
https://s.click.aliexpress.com/e/WKFz5xO9V