# Common Events of the Telephony Subsystem This document lists the common system events provided by the telephony subsystem to applications. ## COMMON_EVENT_SIM_STATE_CHANGED Indicates that the SIM card status has changed. - Value: usual.event.SIM_STATE_CHANGED - Required subscriber permissions: none When the there is a change in the SIM card status of the device, the event notification service is triggered to publish this event. ## COMMON_EVENT_SMS_RECEIVED_COMPLETED Indicates that an SMS message is received. - Value: usual.event.SMS_RECEIVED_COMPLETED - Required subscriber permissions: ohos.permission.RECEIVE_SMS When the device receives an SMS message, the event notification service is triggered to publish this event. ## COMMON_EVENT_SMS_EMERGENCY_CB_RECEIVE_COMPLETED Indicates that an emergency cell broadcast message is received. - Value: usual.event.SMS_EMERGENCY_CB_RECEIVE_COMPLETED - Required subscriber permissions: ohos.permission.RECEIVE_SMS When the device receives an emergency cell broadcast message, the event notification service is triggered to publish this event. ## COMMON_EVENT_SMS_CB_RECEIVE_COMPLETED Indicates that a cell broadcast message is received. - Value: usual.event.SMS_CB_RECEIVE_COMPLETED - Required subscriber permissions: ohos.permission.RECEIVE_SMS When the device receives a cell broadcast message, the event notification service is triggered to publish this event. ## COMMON_EVENT_STK_COMMAND (Reserved, not supported yet) Indicates that an STK command is sent. - Value: usual.event.STK_COMMAND - Required subscriber permissions: none When an STK command is sent, the event notification service is triggered to publish this event. ## COMMON_EVENT_STK_SESSION_END (Reserved event, not supported currently) Indicates that an STK session has ended. - Value: usual.event.STK_SESSION_END - Required subscriber permissions: none When an STK session ends, the event notification service is triggered to publish this event. ## COMMON_EVENT_STK_CARD_STATE_CHANGED (Reserved event, not supported currently) Indicates that the STK card status has been updated. - Value: usual.event.STK_CARD_STATE_CHANGED - Required subscriber permissions: none When the STK card status is updated, the event notification service is triggered to publish this event. ## COMMON_EVENT_STK_ALPHA_IDENTIFIER (Reserved event, not supported currently) Indicates that an STK Alpha identifier is sent. - Value: usual.event.STK_ALPHA_IDENTIFIER - Required subscriber permissions: none When an STK Alpha identifier is sent, the event notification service is triggered to publish this event. ## COMMON_EVENT_SMS_WAPPUSH_RECEIVE_COMPLETED Indicates that a WAP push message is received. - Value: usual.event.SMS_WAPPUSH_RECEIVE_COMPLETED - Required subscriber permissions: ohos.permission.RECEIVE_SMS When the device receives a WAP push message, the event notification service is triggered to publish this event. ## COMMON_EVENT_OPERATOR_CONFIG_CHANGED Indicates that the carrier configuration has been updated. - Value: usual.event.OPERATOR_CONFIG_CHANGED - Required subscriber permissions: none When the carrier configuration of the device is updated, the event notification service is triggered to publish this event. ## COMMON_EVENT_SIM_CARD_DEFAULT_SMS_SUBSCRIPTION_CHANGED Indicates that the default primary SIM card for the SMS service has been updated. - Value: usual.event.DEFAULT_SMS_SUBSCRIPTION_CHANGED - Required subscriber permissions: none When the default primary SIM card for the SMS service is updated, the event notification service is triggered to publish this event. ## COMMON_EVENT_SIM_CARD_DEFAULT_DATA_SUBSCRIPTION_CHANGED Indicates that the default primary SIM card for the data service has been updated. - Value: usual.event.DEFAULT_DATA_SUBSCRIPTION_CHANGED - Required subscriber permissions: none When the default primary SIM card for the data service is updated, the event notification service is triggered to release the system common event. ## COMMON_EVENT_SIM_CARD_DEFAULT_MAIN_SUBSCRIPTION_CHANGED Indicates that the default primary SIM card of the device has been updated. - Value: usual.event.SIM.DEFAULT_MAIN_SUBSCRIPTION_CHANGED - Required subscriber permissions: none When the default primary SIM card of the device is updated, the event notification service is triggered to publish this event. ## COMMON_EVENT_SIM_CARD_DEFAULT_VOICE_SUBSCRIPTION_CHANGED When the default primary SIM card for the voice service is updated, the event notification service is triggered to publish this event. - Value: usual.event.DEFAULT_VOICE_SUBSCRIPTION_CHANGED - Required subscriber permissions: none When the default primary SIM card for the voice service is updated, the event notification service is triggered to publish this event. ## COMMON_EVENT_CALL_STATE_CHANGED Indicates that the call status has been updated. - Value: usual.event.CALL_STATE_CHANGED - Required subscriber permissions: ohos.permission.GET_TELEPHONY_STATE When the call status of the device is updated, the event notification service is triggered to publish this event. ## COMMON_EVENT_CELLULAR_DATA_STATE_CHANGED Indicates that the cellular data status has been updated. - Value: usual.event.CELLULAR_DATA_STATE_CHANGED - Required subscriber permissions: none When the cellular data status of the device is updated, the event notification service is triggered to publish this event. ## COMMON_EVENT_NETWORK_STATE_CHANGED Indicates that the network status has been updated. - Value: usual.event.NETWORK_STATE_CHANGED - Required subscriber permissions: none When the network status of the device is updated, the event notification service is triggered to publish this event. ## COMMON_EVENT_SIGNAL_INFO_CHANGED Indicates that the signal information has been updated. - Value: usual.event.SIGNAL_INFO_CHANGED - Required subscriber permissions: none When the signal information of the device is updated, the event notification service is triggered to publish this event. ## COMMON_EVENT_INCOMING_CALL_MISSED Indicates that an incoming call is missed. - Value: usual.event.INCOMING_CALL_MISSED - Required subscriber permissions: ohos.permission.GET_TELEPHONY_STATE When an incoming call is missed on the device, the event notification service is triggered to publish this event. ## COMMON_EVENT_RADIO_STATE_CHANGE Indicates that the radio status of the device has changed. - Value: usual.event.RADIO_STATE_CHANGE - Required subscriber permissions: none When there is a change in the radio status of the device, the event notification service is triggered to publish this event. ## COMMON_EVENT_DIALER_SPECIAL_CODE Indicates that a secret code is sent successfully. - Value: usual.event.DIALER_SPECIAL_CODE - Required subscriber permissions: none When a secret code is successfully sent on the device, the event notification service is triggered to publish this event. ## COMMON_EVENT_AUDIO_QUALITY_CHANGE Indicates that the audio quality has changed. - Value: usual.event.AUDIO_QUALITY_CHANGE - Required subscriber permissions: none When there is a change in the audio quality of the device, the event notification service is triggered to publish this event.