Wireless connection between smartphone and MMI fails.

Symptoms

["Apple CarPlay: Call up the settings for Bluetooth and Apple CarPlay on your iPhone. Delete your vehicle.", "Android Auto: Call up the settings for Bluetooth on your smartphone. Delete your vehicle. Delete your vehicle in the Android Auto app as well.", "Open the Connected devices menu (page 302). Delete your smartphone in the menu items Telephone 1 and Smartphone interface. Repeat the connection procedure. Restart the MMI (page 26). Restart your smartphone.", "Call up the Wi-Fi settings on your smartphone. Check whether your smartphone has connected to the vehicle’s 5 GHz Wi-Fi. Try connecting to the 5 GHz Wi-Fi manually."]

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