Instead, spend €20 on a decent air-vent phone holder. Download Google Maps offline for free. And let the DVD800 do what it does best: play CDs, display a mediocre trip computer, and serve as a reminder that some things—like car infotainment—are best left in the past.
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Meanwhile, your €10 phone mount from Lidl runs Google Maps or Waze—apps that update in real-time, avoid accidents, and speak to you in a celebrity voice. Instead, spend €20 on a decent air-vent phone holder