trying to figure out if the two iPhone 7 speakers are addressable

AudioOutputs.m

	NSError *error = nil;

	if (![[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryMultiRoute error: &error]) {
		NSLog(@"setCategory: %@", error);
	}

	if (![[AVAudioSession sharedInstance] setActive: YES error: &error]) {
		NSLog(@"setActive: %@", error);
	}

	NSArray<AVAudioSessionPortDescription *> *outputs = AVAudioSession.sharedInstance.currentRoute.outputs;

	for (AVAudioSessionPortDescription *portDesc in outputs) {
		NSLog(@"-----");
		NSLog(@"UID %@", portDesc.UID);
		NSLog(@"portName %@", portDesc.portName);
		NSLog(@"portType %@", portDesc.portType);
		NSLog(@"channels %@", portDesc.channels);
		NSLog(@"dataSources %@", portDesc.dataSources);
		NSLog(@"selectedDataSource %@", portDesc.selectedDataSource);
		NSLog(@"preferredDataSource %@", portDesc.preferredDataSource);
	}