Hello @usedr ,
Just posting this update here in case someone didn't get itRegarding Xiaomi, we've conducted multiple tests and tried to come up with a workaround for the "no internet while using wireless Android Auto" issue. Unfortunately, fixing this properly is simply not possible with MIUI. The only solution is an upgrade to Android 11 via the official method or via a custom ROM. Therefore we decided to not support Xiaomi phones with an Android version lower than 11 anymore, except for the Xiaomi Mi A1-A3, because they run Android One and not MIUI and thus work fine. We will update the front page accordingly.
I gave up too with MIUI and flashed Pixel Experience ROM on my Mi 9 SE too. Now it works without any problems..
This solution worked on my setup with the Samsung galaxy s9+ and OpenAuto pro, lots of tearing ones hair saved, thank you, Spindlewood!This may not work on your rom, but as I've run into this problem on my Galaxy S10+, this might help. Note, I am on the AAWireless beta team. These are general instructions, so forgive the simple details.
If you are having issues with mobile data not being available when connected to Android Auto, there are a few things and settings to be aware of. The following is on my Galaxy S10+.
Note, to enable Developer Settings (aka Developer Options, Developer Mode) in Android, find the Build Number (Settings => Software Information => Build Number) and tap 10 times to bring up a confirmation.
Settings which could affect Mobile Data availability.
1) In Developer Options > Mobile data always active (Turn On)
2) Settings > Connections > Wi-Fi > 3 Dot Menu > Advanced > Switch to mobile data (Turn On) > Network exceptions (Delete the AAWireless device if accidentally added– see below).
If you get a message pop-up when connecting to AAWireless:
"Internet may not be available - If you stay connected to this Wi-Fi network now, your phone will also stay connected whenever you use this network in the future. You can change this in Settings > Connections > Wi-Fi > ADVANCED > Switch to mobile data > Network exceptions." Then it gives two options: "Allow switch" and "Stay connected".
You must respond by canceling out of the choice – do NOT choose either option.
If you choose to Stay Connected, it will add a listing in "Network exceptions" that needs to be deleted. The label for Network exceptions says "Your phone will remain connected to these networks, even if the connection is unstable."
Google made this very confusing.
I have the same Xiaomi RedMi Note 9 Pro MIUI 12 and will the posted instructions as soon as I receive the AAWireless.