An quick settings tile for toggling 5G on Android phones.

This currently does not work. While I am able to flip the 'Preferred Network Type' setting between 'Global' and 'LTE' in Android settings, I can't get the radio mode to acutally switch, therefore rendering the app mostly useless, unless you like randomly pressing a button that does close to nothing. If anybody does know how to do it though, feel free to implement it and open a PR.

Disclaimer: ADB can be scary. I don't assume any reponsibility or liability for anything you screw up on your phone; this is all done at your own discretion. I've tested this on my own phone and can confirm that the information provided below does work for my device, a Google Pixel 5.

Since this modifies the global settings, it requires that you give the app android.permission.WRITE_SECURE_SETTINGS over adb to work. The code might also need some tweaking depending on your phone. If you have a Pixel 5, you are good to go, as that is what I wrote this for.

For all other phones, you will need to see which PREFERRED_NETOWRK_MODE value corresponds to your SIM. To do so:

1. Start up adb for your device, and run adb shell settings list global | grep preferred_network_mode

   The output should look something like:

   $ adb shell settings list global | grep preferred_network_mode
   preferred_network_mode2=27
   preferred_network_mode3=27
   preferred_network_mode27,27
   

2. Change your preferred network type on your device to something different.

3. Run the command in step 1 again.

4. Compare the values outputted with the previous values. The name of the setting that changed is the name that you will need to replace preferred_network_mode3 in QuickSettingsTile.kt with.