diff --git a/packages/angular/common/src/providers/platform.ts b/packages/angular/common/src/providers/platform.ts
index e01c6edb77b..387e378317c 100644
--- a/packages/angular/common/src/providers/platform.ts
+++ b/packages/angular/common/src/providers/platform.ts
@@ -1,5 +1,6 @@
 import { DOCUMENT } from '@angular/common';
 import { NgZone, Inject, Injectable } from '@angular/core';
+import type { DestroyRef } from '@angular/core';
 import { getPlatforms, isPlatform } from '@ionic/core/components';
 import type { BackButtonEventDetail, KeyboardEventDetail, Platforms } from '@ionic/core/components';
 import { Subscription, Subject } from 'rxjs';
@@ -7,9 +8,18 @@ import { Subscription, Subject } from 'rxjs';
 // TODO(FW-2827): types
 
 export interface BackButtonEmitter extends Subject<BackButtonEventDetail> {
+  /**
+   * @param priority  Handlers with a higher priority run first.
+   * @param callback  Called with a function that passes control to the next handler.
+   * @param [destroyRef]  Optionally unsubscribe when this `DestroyRef` is destroyed. For a page
+   * in an `ion-router-outlet` that is when the page is popped off the stack, not when it is
+   * navigated away from.
+   * @returns the subscription, which can also be unsubscribed by hand.
+   */
   subscribeWithPriority(
     priority: number,
-    callback: (processNextHandler: () => void) => Promise<any> | void
+    callback: (processNextHandler: () => void) => Promise<any> | void,
+    destroyRef?: DestroyRef
   ): Subscription;
 }
 
@@ -62,10 +72,14 @@ export class Platform {
   constructor(@Inject(DOCUMENT) private doc: any, zone: NgZone) {
     zone.run(() => {
       this.win = doc.defaultView;
-      this.backButton.subscribeWithPriority = function (priority, callback) {
-        return this.subscribe((ev) => {
+      this.backButton.subscribeWithPriority = function (priority, callback, destroyRef) {
+        const subscription = this.subscribe((ev) => {
           return ev.register(priority, (processNextHandler) => zone.run(() => callback(processNextHandler)));
         });
+
+        destroyRef?.onDestroy(() => subscription.unsubscribe());
+
+        return subscription;
       };
 
       proxyEvent(this.pause, doc, 'pause', zone);