diff --git a/api/@ohos.telephony.observer.d.ts b/api/@ohos.telephony.observer.d.ts
old mode 100644
new mode 100755
index 6e4fbce5de6c0999198b4f3c0b5fbaf1d5ab7777..63439819e241689d51725967160230af22017d23
--- a/api/@ohos.telephony.observer.d.ts
+++ b/api/@ohos.telephony.observer.d.ts
@@ -16,6 +16,7 @@
 import {Callback} from "./basic";
 import radio from "./@ohos.telephony.radio";
 import call from "./@ohos.telephony.call";
+import {SimState} from "./@ohos.telephony.sim";
 
 /**
  * Monitors telephony state updates of a device, including updates of the network state,
@@ -70,11 +71,44 @@ declare namespace observer {
    *   The value of number is an empty string if the application does not have
    *     the {@code ohos.permission#READ_CALL_LOG READ_CALL_LOG} permission.
    */
-  function on(type: 'callStateChange', callback: Callback<{ state: CallState, number: string }>): void;
+  function on(type: 'callStateChange', callback: Callback<{ state: CallState, number: String }>): void;
   function on(type: 'callStateChange', options: { slotId: number },
-    callback: Callback<{ state: CallState, number: string }>): void;
+    callback: Callback<{ state: CallState, number: String }>): void;
 
-  function off(type: 'callStateChange', callback?: Callback<{ state: CallState, number: string }>): void;
+  function off(type: 'callStateChange', callback?: Callback<{ state: CallState, number: String }>): void;
+
+  /**
+   * Receives a sim state change. This callback is invoked when the sim state of a specified card updates
+   * and the observer is added to monitor the updates.
+   *
+   * @param type simStateChange
+   * @param options including slotId Indicates the ID of the target card slot.
+   *   The value {@code 0} indicates card 1, and the value {@code 1} indicates card 2.
+   * @param callback including state Indicates the sim state, and reason Indicates the cause of the change.
+   *   The value of reason is an empty string if the application does not have
+   */
+  function on(type: 'simStateChange', callback: Callback<SimStateData>): void;
+  function on(type: 'simStateChange', options: { slotId: number },
+    callback: Callback<SimStateData>): void;
+
+  function off(type: 'simStateChange', callback?: Callback<SimStateData>): void;
+
+  /**
+   * @since 8
+   */
+  export interface SimStateData {
+    state: SimState,
+    reason: LockReason
+  }
+  
+  /**
+   * @since 8
+   */
+  export enum LockReason {
+    SIM_NONE,
+    SIM_PIN,
+    SIM_PUK,
+  }
 }
 
 export default observer;
\ No newline at end of file
diff --git a/api/@ohos.telephony.radio.d.ts b/api/@ohos.telephony.radio.d.ts
index bbc4dcfc71deb04e96e1e5bf2e8328c822a6f7b7..3b055ff198245890cc90689b2f3621c57840f5be 100644
--- a/api/@ohos.telephony.radio.d.ts
+++ b/api/@ohos.telephony.radio.d.ts
@@ -142,6 +142,21 @@ declare namespace radio {
   function turnOffRadio(callback: AsyncCallback<void>): void;
   function turnOffRadio(): Promise<void>;
 
+  /**
+   * Obtains the IMEI of a specified card slot of the device.
+   *
+   * <p>Requires Permission: {@code ohos.permission.GET_TELEPHONY_STATE}.
+   *
+   * @param slotId Indicates the card slot index number, ranging from 0 to the maximum card slot index number
+   * supported by the device.
+   * @param callback Returns the IMEI; returns an empty string if the IMEI does not exist.
+   * @permission ohos.permission.GET_TELEPHONY_STATE
+   * @since 8
+   */
+  function getIMEI(callback: AsyncCallback<string>): void;
+  function getIMEI(slotId: number, callback: AsyncCallback<string>): void;
+  function getIMEI(slotId?: number): Promise<string>;
+
   /**
    * Describes the radio access technology.
    */
diff --git a/api/@ohos.telephony.sim.d.ts b/api/@ohos.telephony.sim.d.ts
index ed9652a51a98d1674559b03443969de12edc360a..1e9553d443f84ac4e1c126e4e741cc57d0e19c00 100644
--- a/api/@ohos.telephony.sim.d.ts
+++ b/api/@ohos.telephony.sim.d.ts
@@ -105,6 +105,22 @@ declare namespace sim {
   function getSimIccId(slotId: number, callback: AsyncCallback<string>): void;
   function getSimIccId(slotId: number): Promise<string>;
 
+  /**
+   * Obtains the MSISDN of the SIM card in a specified slot.
+   * The MSISDN is recorded in the EFMSISDN file of the SIM card.
+   *
+   * <p>Requires Permission: {@code ohos.permission.GET_TELEPHONY_STATE}.
+   *
+   * @param slotId Indicates the card slot index number,
+   * ranging from 0 to the maximum card slot index number supported by the device.
+   * @param callback Returns the MSISDN; returns an empty string if no SIM card is inserted or
+   * no MSISDN is recorded in the EFMSISDN file.
+   * @permission ohos.permission.GET_TELEPHONY_STATE
+   * @since 8
+   */
+  function getSimTelephoneNumber(slotId: number, callback: AsyncCallback<string>): void;
+  function getSimTelephoneNumber(slotId: number): Promise<string>;
+
   /**
    * Obtains the Group Identifier Level 1 (GID1) of the SIM card in a specified slot.
    * The GID1 is recorded in the EFGID1 file of the SIM card.
@@ -126,6 +142,17 @@ declare namespace sim {
    */
   function getIMSI(slotId: number, callback: AsyncCallback<string>): void;
   function getIMSI(slotId: number): Promise<string>;
+  
+  /**
+   * Checks whether a SIM card is inserted in a specified slot.
+   *
+   * @param slotId Indicates the card slot index number,
+   * ranging from 0 to the maximum card slot index number supported by the device.
+   * @param callback Returns true if a SIM card is inserted; return false otherwise.
+   * @since 8
+   */
+  function hasSimCard(slotId: number, callback: AsyncCallback<boolean>): void;
+  function hasSimCard(slotId: number): Promise<boolean>;
 
   /**
    * @permission ohos.permission.GET_TELEPHONY_STATE
@@ -174,6 +201,35 @@ declare namespace sim {
    */
   function setLockState(slotId: number, pin: string, enable: number, callback: AsyncCallback<LockStatusResponse>): void;
   function setLockState(slotId: number, pin: string, enable: number): Promise<LockStatusResponse>;
+    
+  /**
+   * @systemapi Hide this for inner system use.
+   * @since 8
+   */
+  function queryIccDiallingNumbers(slotId: number, type: ContactType, callback: AsyncCallback<Array<DiallingNumbersInfo>>): void
+  function queryIccDiallingNumbers(slotId: number, type: ContactType): Promise<Array<DiallingNumbersInfo>>;
+
+
+  /**
+   * @systemapi Hide this for inner system use.
+   * @since 8
+   */
+  function addIccDiallingNumbers(slotId: number, type: ContactType, diallingNumbers: DiallingNumbersInfo, callback: AsyncCallback<void>): void;
+  function addIccDiallingNumbers(slotId: number, type: ContactType, diallingNumbers: DiallingNumbersInfo): Promise<void>;
+
+  /**
+   * @systemapi Hide this for inner system use.
+   * @since 8
+   */
+  function delIccDiallingNumbers(slotId: number, type: ContactType, diallingNumbers: DiallingNumbersInfo, callback: AsyncCallback<void>): void;
+  function delIccDiallingNumbers(slotId: number, type: ContactType, diallingNumbers: DiallingNumbersInfo): Promise<void>;
+
+  /**
+   * @systemapi Hide this for inner system use.
+   * @since 8
+   */
+  function updateIccDiallingNumbers(slotId: number, type: ContactType, diallingNumbers: DiallingNumbersInfo, callback: AsyncCallback<void>): void;
+  function updateIccDiallingNumbers(slotId: number, type: ContactType, diallingNumbers: DiallingNumbersInfo): Promise<void>;
 
   /**
    * @systemapi Hide this for inner system use.
@@ -194,6 +250,17 @@ declare namespace sim {
     remain?: number,                /* Operations remaining */
   }
 
+  /**
+   * @systemapi Hide this for inner system use.
+   * @since 8
+   */
+   export interface DiallingNumbersInfo {
+    alphaTag: string,
+    number: string,
+    recordNumber?: number,
+    pin2?: string,
+  }
+
   export enum SimState {
     /**
      * Indicates unknown SIM card state, that is, the accurate status cannot be obtained.