diff --git a/libs/common/src/auth/abstractions/devices-api.service.abstraction.ts b/libs/common/src/auth/abstractions/devices-api.service.abstraction.ts
index 92f0ebf1667..ede49fba4bc 100644
--- a/libs/common/src/auth/abstractions/devices-api.service.abstraction.ts
+++ b/libs/common/src/auth/abstractions/devices-api.service.abstraction.ts
@@ -20,10 +20,7 @@ export abstract class DevicesApiServiceAbstraction {
     deviceKeyEncryptedDevicePrivateKey: string,
   ) => Promise<DeviceResponse>;
 
-  updateTrust: (
-    updateDevicesTrustRequestModel: UpdateDevicesTrustRequest,
-    deviceIdentifier: string,
-  ) => Promise<void>;
+  updateTrust: (updateDevicesTrustRequestModel: UpdateDevicesTrustRequest) => Promise<void>;
 
   getDeviceKeys: (
     deviceIdentifier: string,
@@ -31,11 +28,10 @@ export abstract class DevicesApiServiceAbstraction {
   ) => Promise<ProtectedDeviceResponse>;
 
   /**
-   * Notifies the server that the device has a device key, but didn't receive any associated decryption keys.
+   * Notifies the server that the current device has a device key, but didn't receive any associated decryption keys.
    * Note: For debugging purposes only.
-   * @param deviceIdentifier - current device identifier
    */
-  postDeviceTrustLoss: (deviceIdentifier: string) => Promise<void>;
+  postDeviceTrustLoss: () => Promise<void>;
 
   /**
    * Deactivates a device
diff --git a/libs/common/src/auth/abstractions/devices/devices.service.abstraction.ts b/libs/common/src/auth/abstractions/devices/devices.service.abstraction.ts
index ba6890947c1..135a6c6206f 100644
--- a/libs/common/src/auth/abstractions/devices/devices.service.abstraction.ts
+++ b/libs/common/src/auth/abstractions/devices/devices.service.abstraction.ts
@@ -5,7 +5,6 @@ import { DeviceView } from "./views/device.view";
 
 export abstract class DevicesServiceAbstraction {
   abstract getDevices$(): Observable<Array<DeviceView>>;
-  abstract getDeviceByIdentifier$(deviceIdentifier: string): Observable<DeviceView>;
   abstract isDeviceKnownForUser$(email: string, deviceIdentifier: string): Observable<boolean>;
   abstract updateTrustedDeviceKeys$(
     deviceIdentifier: string,
diff --git a/libs/common/src/auth/services/device-trust.service.implementation.ts b/libs/common/src/auth/services/device-trust.service.implementation.ts
index 15c12b7a39a..d139382ddb1 100644
--- a/libs/common/src/auth/services/device-trust.service.implementation.ts
+++ b/libs/common/src/auth/services/device-trust.service.implementation.ts
@@ -252,7 +252,7 @@ export class DeviceTrustService implements DeviceTrustServiceAbstraction {
       "[Device trust rotation] Posting device trust update with current device:",
       deviceIdentifier,
     );
-    await this.devicesApiService.updateTrust(trustRequest, deviceIdentifier);
+    await this.devicesApiService.updateTrust(trustRequest);
     this.logService.info("[Device trust rotation] Device trust update posted successfully.");
   }
 
@@ -359,8 +359,7 @@ export class DeviceTrustService implements DeviceTrustServiceAbstraction {
   }
 
   async recordDeviceTrustLoss(): Promise<void> {
-    const deviceIdentifier = await this.appIdService.getAppId();
-    await this.devicesApiService.postDeviceTrustLoss(deviceIdentifier);
+    await this.devicesApiService.postDeviceTrustLoss();
   }
 
   private getSecureStorageOptions(userId: UserId): StorageOptions {
diff --git a/libs/common/src/auth/services/devices-api.service.implementation.ts b/libs/common/src/auth/services/devices-api.service.implementation.ts
index cf760effbdf..a5e79492161 100644
--- a/libs/common/src/auth/services/devices-api.service.implementation.ts
+++ b/libs/common/src/auth/services/devices-api.service.implementation.ts
@@ -73,10 +73,7 @@ export class DevicesApiServiceImplementation implements DevicesApiServiceAbstrac
     return new DeviceResponse(result);
   }
 
-  async updateTrust(
-    updateDevicesTrustRequestModel: UpdateDevicesTrustRequest,
-    deviceIdentifier: string,
-  ): Promise<void> {
+  async updateTrust(updateDevicesTrustRequestModel: UpdateDevicesTrustRequest): Promise<void> {
     await this.apiService.send(
       "POST",
       "/devices/update-trust",
@@ -84,9 +81,6 @@ export class DevicesApiServiceImplementation implements DevicesApiServiceAbstrac
       true,
       false,
       null,
-      (headers) => {
-        headers.set("Device-Identifier", deviceIdentifier);
-      },
     );
   }
 
@@ -104,18 +98,8 @@ export class DevicesApiServiceImplementation implements DevicesApiServiceAbstrac
     return new ProtectedDeviceResponse(result);
   }
 
-  async postDeviceTrustLoss(deviceIdentifier: string): Promise<void> {
-    await this.apiService.send(
-      "POST",
-      "/devices/lost-trust",
-      null,
-      true,
-      false,
-      null,
-      (headers) => {
-        headers.set("Device-Identifier", deviceIdentifier);
-      },
-    );
+  async postDeviceTrustLoss(): Promise<void> {
+    await this.apiService.send("POST", "/devices/lost-trust", null, true, false);
   }
 
   async deactivateDevice(deviceId: string): Promise<void> {
diff --git a/libs/common/src/services/api.service.ts b/libs/common/src/services/api.service.ts
index ad59ad0837a..41fd40afcb4 100644
--- a/libs/common/src/services/api.service.ts
+++ b/libs/common/src/services/api.service.ts
@@ -1913,6 +1913,7 @@ export class ApiService implements ApiServiceAbstraction {
     let requestBody: any = null;
     const headers = new Headers({
       "Device-Type": this.deviceType,
+      "Device-Identifier": await this.appIdService.getAppId(),
     });
 
     if (flagEnabled("prereleaseBuild")) {