diff --git a/src/voice-broadcast/index.ts b/src/voice-broadcast/index.ts
index 1ed5ff5377..05fca50c93 100644
--- a/src/voice-broadcast/index.ts
+++ b/src/voice-broadcast/index.ts
@@ -37,7 +37,6 @@ export * from "./stores/VoiceBroadcastRecordingsStore";
 export * from "./utils/getChunkLength";
 export * from "./utils/hasRoomLiveVoiceBroadcast";
 export * from "./utils/findRoomLiveVoiceBroadcastFromUserAndDevice";
-export * from "./utils/resumeVoiceBroadcastInRoom";
 export * from "./utils/shouldDisplayAsVoiceBroadcastRecordingTile";
 export * from "./utils/shouldDisplayAsVoiceBroadcastTile";
 export * from "./utils/startNewVoiceBroadcastRecording";
diff --git a/src/voice-broadcast/utils/VoiceBroadcastResumer.ts b/src/voice-broadcast/utils/VoiceBroadcastResumer.ts
index c8b3407451..be949d0eab 100644
--- a/src/voice-broadcast/utils/VoiceBroadcastResumer.ts
+++ b/src/voice-broadcast/utils/VoiceBroadcastResumer.ts
@@ -14,43 +14,87 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-import { ClientEvent, MatrixClient, Room } from "matrix-js-sdk/src/matrix";
+import { ClientEvent, MatrixClient, MatrixEvent, RelationType, Room } from "matrix-js-sdk/src/matrix";
+import { SyncState } from "matrix-js-sdk/src/sync";
 
+import { VoiceBroadcastInfoEventContent, VoiceBroadcastInfoEventType, VoiceBroadcastInfoState } from "..";
 import { IDestroyable } from "../../utils/IDestroyable";
 import { findRoomLiveVoiceBroadcastFromUserAndDevice } from "./findRoomLiveVoiceBroadcastFromUserAndDevice";
-import { resumeVoiceBroadcastInRoom } from "./resumeVoiceBroadcastInRoom";
 
+/**
+ * Handles voice broadcasts on app resume (after logging in, reload, crash…).
+ */
 export class VoiceBroadcastResumer implements IDestroyable {
-    private seenRooms = new Set<string>();
-    private userId: string;
-    private deviceId: string;
-
     public constructor(
         private client: MatrixClient,
     ) {
-        this.client.on(ClientEvent.Room, this.onRoom);
-        this.userId = this.client.getUserId();
-        this.deviceId = this.client.getDeviceId();
+        if (client.isInitialSyncComplete()) {
+            this.resume();
+        } else {
+            // wait for initial sync
+            client.on(ClientEvent.Sync, this.onClientSync);
+        }
     }
 
-    private onRoom = (room: Room): void => {
-        if (this.seenRooms.has(room.roomId)) return;
-
-        this.seenRooms.add(room.roomId);
-
-        const infoEvent = findRoomLiveVoiceBroadcastFromUserAndDevice(
-            room,
-            this.userId,
-            this.deviceId,
-        );
-
-        if (infoEvent) {
-            resumeVoiceBroadcastInRoom(infoEvent, room, this.client);
+    private onClientSync = () => {
+        if (this.client.getSyncState() === SyncState.Syncing) {
+            this.client.off(ClientEvent.Sync, this.onClientSync);
+            this.resume();
         }
     };
 
+    private resume(): void {
+        const userId = this.client.getUserId();
+        const deviceId = this.client.getDeviceId();
+
+        if (!userId || !deviceId) {
+            // Resuming a voice broadcast only makes sense if there is a user.
+            return;
+        }
+
+        this.client.getRooms().forEach((room: Room) => {
+            const infoEvent = findRoomLiveVoiceBroadcastFromUserAndDevice(room, userId, deviceId);
+
+            if (infoEvent) {
+                // Found a live broadcast event from current device; stop it.
+                // Stopping it is a temporary solution (see PSF-1669).
+                this.sendStopVoiceBroadcastStateEvent(infoEvent);
+                return false;
+            }
+        });
+    }
+
+    private sendStopVoiceBroadcastStateEvent(infoEvent: MatrixEvent): void {
+        const userId = this.client.getUserId();
+        const deviceId = this.client.getDeviceId();
+        const roomId = infoEvent.getRoomId();
+
+        if (!userId || !deviceId || !roomId) {
+            // We can only send a state event if we know all the IDs.
+            return;
+        }
+
+        const content: VoiceBroadcastInfoEventContent = {
+            device_id: deviceId,
+            state: VoiceBroadcastInfoState.Stopped,
+        };
+
+        // all events should reference the started event
+        const referencedEventId = infoEvent.getContent()?.state === VoiceBroadcastInfoState.Started
+            ? infoEvent.getId()
+            : infoEvent.getContent()?.["m.relates_to"]?.event_id;
+
+        if (referencedEventId) {
+            content["m.relates_to"] = {
+                rel_type: RelationType.Reference,
+                event_id: referencedEventId,
+            };
+        }
+
+        this.client.sendStateEvent(roomId, VoiceBroadcastInfoEventType, content, userId);
+    }
+
     destroy(): void {
-        this.client.off(ClientEvent.Room, this.onRoom);
-        this.seenRooms = new Set<string>();
+        this.client.off(ClientEvent.Sync, this.onClientSync);
     }
 }
diff --git a/src/voice-broadcast/utils/resumeVoiceBroadcastInRoom.ts b/src/voice-broadcast/utils/resumeVoiceBroadcastInRoom.ts
deleted file mode 100644
index f365fce226..0000000000
--- a/src/voice-broadcast/utils/resumeVoiceBroadcastInRoom.ts
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
-Copyright 2022 The Matrix.org Foundation C.I.C.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-import { MatrixClient, MatrixEvent, Room } from "matrix-js-sdk/src/matrix";
-
-import { VoiceBroadcastInfoState, VoiceBroadcastRecording } from "..";
-import { VoiceBroadcastRecordingsStore } from "../stores/VoiceBroadcastRecordingsStore";
-
-export const resumeVoiceBroadcastInRoom = (latestInfoEvent: MatrixEvent, room: Room, client: MatrixClient) => {
-    // voice broadcasts are based on their started event, try to find it
-    const infoEvent = latestInfoEvent.getContent()?.state === VoiceBroadcastInfoState.Started
-        ? latestInfoEvent
-        : room.findEventById(latestInfoEvent.getRelation()?.event_id);
-
-    if (!infoEvent) {
-        return;
-    }
-
-    const recording = new VoiceBroadcastRecording(infoEvent, client, VoiceBroadcastInfoState.Paused);
-    VoiceBroadcastRecordingsStore.instance().setCurrent(recording);
-};
diff --git a/test/test-utils/test-utils.ts b/test/test-utils/test-utils.ts
index 97a17e3b70..ca07edb0bd 100644
--- a/test/test-utils/test-utils.ts
+++ b/test/test-utils/test-utils.ts
@@ -143,7 +143,7 @@ export function createTestClient(): MatrixClient {
         sendTyping: jest.fn().mockResolvedValue({}),
         sendMessage: jest.fn().mockResolvedValue({}),
         sendStateEvent: jest.fn().mockResolvedValue(undefined),
-        getSyncState: () => "SYNCING",
+        getSyncState: jest.fn().mockReturnValue("SYNCING"),
         generateClientSecret: () => "t35tcl1Ent5ECr3T",
         isGuest: jest.fn().mockReturnValue(false),
         getRoomHierarchy: jest.fn().mockReturnValue({
diff --git a/test/voice-broadcast/utils/VoiceBroadcastResumer-test.ts b/test/voice-broadcast/utils/VoiceBroadcastResumer-test.ts
index 4583590342..b166bbb9bd 100644
--- a/test/voice-broadcast/utils/VoiceBroadcastResumer-test.ts
+++ b/test/voice-broadcast/utils/VoiceBroadcastResumer-test.ts
@@ -15,40 +15,78 @@ limitations under the License.
 */
 
 import { mocked } from "jest-mock";
-import { ClientEvent, MatrixClient, MatrixEvent, Room } from "matrix-js-sdk/src/matrix";
+import { ClientEvent, MatrixClient, MatrixEvent, RelationType, Room } from "matrix-js-sdk/src/matrix";
+import { SyncState } from "matrix-js-sdk/src/sync";
 
 import {
-    findRoomLiveVoiceBroadcastFromUserAndDevice,
-    resumeVoiceBroadcastInRoom,
+    VoiceBroadcastInfoEventContent,
+    VoiceBroadcastInfoEventType,
     VoiceBroadcastInfoState,
     VoiceBroadcastResumer,
 } from "../../../src/voice-broadcast";
 import { stubClient } from "../../test-utils";
 import { mkVoiceBroadcastInfoStateEvent } from "./test-utils";
 
-jest.mock("../../../src/voice-broadcast/utils/findRoomLiveVoiceBroadcastFromUserAndDevice");
-jest.mock("../../../src/voice-broadcast/utils/resumeVoiceBroadcastInRoom");
-
 describe("VoiceBroadcastResumer", () => {
     const roomId = "!room:example.com";
     let client: MatrixClient;
     let room: Room;
     let resumer: VoiceBroadcastResumer;
-    let infoEvent: MatrixEvent;
+    let startedInfoEvent: MatrixEvent;
+    let pausedInfoEvent: MatrixEvent;
+
+    const itShouldNotSendAStateEvent = (): void => {
+        it("should not send a state event", () => {
+            expect(client.sendStateEvent).not.toHaveBeenCalled();
+        });
+    };
+
+    const itShouldSendAStoppedStateEvent = (): void => {
+        it("should send a stopped state event", () => {
+            expect(client.sendStateEvent).toHaveBeenCalledWith(
+                startedInfoEvent.getRoomId(),
+                VoiceBroadcastInfoEventType,
+                {
+                    "device_id": client.getDeviceId(),
+                    "state": VoiceBroadcastInfoState.Stopped,
+                    "m.relates_to": {
+                        rel_type: RelationType.Reference,
+                        event_id: startedInfoEvent.getId(),
+                    },
+                } as VoiceBroadcastInfoEventContent,
+                client.getUserId(),
+            );
+        });
+    };
+
+    const itShouldDeregisterFromTheClient = () => {
+        it("should deregister from the client", () => {
+            expect(client.off).toHaveBeenCalledWith(ClientEvent.Sync, expect.any(Function));
+        });
+    };
 
     beforeEach(() => {
         client = stubClient();
         jest.spyOn(client, "off");
-        room = new Room(roomId, client, client.getUserId());
-        mocked(client.getRoom).mockImplementation((getRoomId: string) => {
+        room = new Room(roomId, client, client.getUserId()!);
+        mocked(client.getRoom).mockImplementation((getRoomId: string | undefined) => {
             if (getRoomId === roomId) return room;
+
+            return null;
         });
-        resumer = new VoiceBroadcastResumer(client);
-        infoEvent = mkVoiceBroadcastInfoStateEvent(
+        mocked(client.getRooms).mockReturnValue([room]);
+        startedInfoEvent = mkVoiceBroadcastInfoStateEvent(
             roomId,
             VoiceBroadcastInfoState.Started,
-            client.getUserId(),
-            client.getDeviceId(),
+            client.getUserId()!,
+            client.getDeviceId()!,
+        );
+        pausedInfoEvent = mkVoiceBroadcastInfoStateEvent(
+            roomId,
+            VoiceBroadcastInfoState.Paused,
+            client.getUserId()!,
+            client.getDeviceId()!,
+            startedInfoEvent,
         );
     });
 
@@ -56,56 +94,95 @@ describe("VoiceBroadcastResumer", () => {
         jest.clearAllMocks();
     });
 
-    describe("when there is no info event", () => {
+    describe("when the initial sync is completed", () => {
         beforeEach(() => {
-            client.emit(ClientEvent.Room, room);
+            mocked(client.isInitialSyncComplete).mockReturnValue(true);
         });
 
-        it("should not resume a broadcast", () => {
-            expect(resumeVoiceBroadcastInRoom).not.toHaveBeenCalled();
-        });
-    });
-
-    describe("when there is an info event", () => {
-        beforeEach(() => {
-            mocked(findRoomLiveVoiceBroadcastFromUserAndDevice).mockImplementation((
-                findRoom: Room,
-                userId: string,
-                deviceId: string,
-            ) => {
-                if (findRoom === room && userId === client.getUserId() && deviceId === client.getDeviceId()) {
-                    return infoEvent;
-                }
-            });
-            client.emit(ClientEvent.Room, room);
-        });
-
-        it("should resume a broadcast", () => {
-            expect(resumeVoiceBroadcastInRoom).toHaveBeenCalledWith(
-                infoEvent,
-                room,
-                client,
-            );
-        });
-
-        describe("and emitting a room event again", () => {
+        describe("and there is no info event", () => {
             beforeEach(() => {
-                client.emit(ClientEvent.Room, room);
+                resumer = new VoiceBroadcastResumer(client);
             });
 
-            it("should not resume the broadcast again", () => {
-                expect(resumeVoiceBroadcastInRoom).toHaveBeenCalledTimes(1);
+            itShouldNotSendAStateEvent();
+
+            describe("and calling destroy", () => {
+                beforeEach(() => {
+                    resumer.destroy();
+                });
+
+                itShouldDeregisterFromTheClient();
             });
         });
+
+        describe("and there is a started info event", () => {
+            beforeEach(() => {
+                room.currentState.setStateEvents([startedInfoEvent]);
+            });
+
+            describe("and the client knows about the user and device", () => {
+                beforeEach(() => {
+                    resumer = new VoiceBroadcastResumer(client);
+                });
+
+                itShouldSendAStoppedStateEvent();
+            });
+
+            describe("and the client doesn't know about the user", () => {
+                beforeEach(() => {
+                    mocked(client.getUserId).mockReturnValue(null);
+                    resumer = new VoiceBroadcastResumer(client);
+                });
+
+                itShouldNotSendAStateEvent();
+            });
+
+            describe("and the client doesn't know about the device", () => {
+                beforeEach(() => {
+                    mocked(client.getDeviceId).mockReturnValue(null);
+                    resumer = new VoiceBroadcastResumer(client);
+                });
+
+                itShouldNotSendAStateEvent();
+            });
+        });
+
+        describe("and there is a paused info event", () => {
+            beforeEach(() => {
+                room.currentState.setStateEvents([pausedInfoEvent]);
+                resumer = new VoiceBroadcastResumer(client);
+            });
+
+            itShouldSendAStoppedStateEvent();
+        });
     });
 
-    describe("when calling destroy", () => {
+    describe("when the initial sync is not completed", () => {
         beforeEach(() => {
-            resumer.destroy();
+            room.currentState.setStateEvents([pausedInfoEvent]);
+            mocked(client.isInitialSyncComplete).mockReturnValue(false);
+            mocked(client.getSyncState).mockReturnValue(SyncState.Prepared);
+            resumer = new VoiceBroadcastResumer(client);
         });
 
-        it("should deregister from the client", () => {
-            expect(client.off).toHaveBeenCalledWith(ClientEvent.Room, expect.any(Function));
+        itShouldNotSendAStateEvent();
+
+        describe("and a sync event appears", () => {
+            beforeEach(() => {
+                client.emit(ClientEvent.Sync, SyncState.Prepared, SyncState.Stopped);
+            });
+
+            itShouldNotSendAStateEvent();
+
+            describe("and the initial sync completed and a sync event appears", () => {
+                beforeEach(() => {
+                    mocked(client.getSyncState).mockReturnValue(SyncState.Syncing);
+                    client.emit(ClientEvent.Sync, SyncState.Syncing, SyncState.Prepared);
+                });
+
+                itShouldSendAStoppedStateEvent();
+                itShouldDeregisterFromTheClient();
+            });
         });
     });
 });
diff --git a/test/voice-broadcast/utils/resumeVoiceBroadcastInRoom-test.ts b/test/voice-broadcast/utils/resumeVoiceBroadcastInRoom-test.ts
deleted file mode 100644
index 8d435fb62e..0000000000
--- a/test/voice-broadcast/utils/resumeVoiceBroadcastInRoom-test.ts
+++ /dev/null
@@ -1,110 +0,0 @@
-/*
-Copyright 2022 The Matrix.org Foundation C.I.C.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-import { mocked } from "jest-mock";
-import { MatrixClient, MatrixEvent, Room } from "matrix-js-sdk/src/matrix";
-
-import {
-    resumeVoiceBroadcastInRoom,
-    VoiceBroadcastInfoState,
-    VoiceBroadcastRecording,
-    VoiceBroadcastRecordingsStore,
-} from "../../../src/voice-broadcast";
-import { stubClient } from "../../test-utils";
-import { mkVoiceBroadcastInfoStateEvent } from "../utils/test-utils";
-
-const mockRecording = jest.fn();
-
-jest.mock("../../../src/voice-broadcast/models/VoiceBroadcastRecording", () => ({
-    ...jest.requireActual("../../../src/voice-broadcast/models/VoiceBroadcastRecording") as object,
-    VoiceBroadcastRecording: jest.fn().mockImplementation(() => mockRecording),
-}));
-
-describe("resumeVoiceBroadcastInRoom", () => {
-    let client: MatrixClient;
-    const roomId = "!room:example.com";
-    let room: Room;
-    let startedInfoEvent: MatrixEvent;
-    let stoppedInfoEvent: MatrixEvent;
-
-    const itShouldStartAPausedRecording = () => {
-        it("should start a paused recording", () => {
-            expect(VoiceBroadcastRecording).toHaveBeenCalledWith(
-                startedInfoEvent,
-                client,
-                VoiceBroadcastInfoState.Paused,
-            );
-            expect(VoiceBroadcastRecordingsStore.instance().setCurrent).toHaveBeenCalledWith(mockRecording);
-        });
-    };
-
-    beforeEach(() => {
-        client = stubClient();
-        room = new Room(roomId, client, client.getUserId());
-        jest.spyOn(room, "findEventById");
-        jest.spyOn(VoiceBroadcastRecordingsStore.instance(), "setCurrent").mockImplementation();
-
-        startedInfoEvent = mkVoiceBroadcastInfoStateEvent(
-            roomId,
-            VoiceBroadcastInfoState.Started,
-            client.getUserId(),
-            client.getDeviceId(),
-        );
-
-        stoppedInfoEvent = mkVoiceBroadcastInfoStateEvent(
-            roomId,
-            VoiceBroadcastInfoState.Stopped,
-            client.getUserId(),
-            client.getDeviceId(),
-            startedInfoEvent,
-        );
-    });
-
-    afterEach(() => {
-        jest.clearAllMocks();
-    });
-
-    describe("when called with a stopped info event", () => {
-        describe("and there is a related event", () => {
-            beforeEach(() => {
-                mocked(room.findEventById).mockReturnValue(startedInfoEvent);
-                resumeVoiceBroadcastInRoom(stoppedInfoEvent, room, client);
-            });
-
-            itShouldStartAPausedRecording();
-        });
-
-        describe("and there is no related event", () => {
-            beforeEach(() => {
-                mocked(room.findEventById).mockReturnValue(null);
-                resumeVoiceBroadcastInRoom(stoppedInfoEvent, room, client);
-            });
-
-            it("should not start a broadcast", () => {
-                expect(VoiceBroadcastRecording).not.toHaveBeenCalled();
-                expect(VoiceBroadcastRecordingsStore.instance().setCurrent).not.toHaveBeenCalled();
-            });
-        });
-    });
-
-    describe("when called with a started info event", () => {
-        beforeEach(() => {
-            resumeVoiceBroadcastInRoom(startedInfoEvent, room, client);
-        });
-
-        itShouldStartAPausedRecording();
-    });
-});