/**
* Notify the framework that the device is disconnected from the IMS network.
+ * <p>
+ * Note: Prior to calling {@link #onDeregistered(ImsReasonInfo)}, you should ensure that any
+ * changes to {@link android.telephony.ims.feature.ImsFeature} capability availability is sent
+ * to the framework. For example,
+ * {@link android.telephony.ims.feature.MmTelFeature.MmTelCapabilities#CAPABILITY_TYPE_VIDEO}
+ * and
+ * {@link android.telephony.ims.feature.MmTelFeature.MmTelCapabilities#CAPABILITY_TYPE_VOICE}
+ * may be set to unavailable to ensure the framework knows these services are no longer
+ * available due to de-registration. If you do not report capability changes impacted by
+ * de-registration, the framework will not know which features are no longer available as a
+ * result.
*
* @param info the {@link ImsReasonInfo} associated with why registration was disconnected.
*/