Some Android Phones support WiFi calling but there's no option in the UI to turn on this feature. For such phones, you can use one of following techniques
$ am start -a android.intent.action.MAIN -n com.android.settings/.Settings\$WifiCallingSettingsActivity
$ am start -a android.intent.action.MAIN -n com.google.android.ims/.ui.WifiCallingSettingsActivity
Download the Activity Launcher app (https://play.google.com/store/apps/details?id=de.szalkowski.activitylauncher) from Playstore. Search for "wificalling" (Without space).
Hello dear
Is this the Command, that need to put on adb sell or is there something missing? Or it should be started first with adb shell?
Can you please write down a complete command without any signs😊
Best regards
Gsm9737
$ am start -a android.intent.action.MAIN -n com.android.settings/.Settings$WifiCallingSettingsActivity