diff --git a/.changeset/polyfill-change-array-by-copy.md b/.changeset/polyfill-change-array-by-copy.md
new file mode 100644
index 0000000000..7ba827c45a
--- /dev/null
+++ b/.changeset/polyfill-change-array-by-copy.md
@@ -0,0 +1,5 @@
+---
+default: patch
+---
+
+Fix a crash on older WebViews that lack `toSorted`, `toReversed`, and `with`.
diff --git a/.changeset/shrink-foss-android-apk.md b/.changeset/shrink-foss-android-apk.md
new file mode 100644
index 0000000000..f8d8a5b24b
--- /dev/null
+++ b/.changeset/shrink-foss-android-apk.md
@@ -0,0 +1,5 @@
+---
+default: patch
+---
+
+Shrink the Android APK: strip the native library, drop bundled source maps, and split the F-Droid build per ABI.
diff --git a/.github/workflows/tauri-build.yml b/.github/workflows/tauri-build.yml
index adf3a41b7a..1223c22409 100644
--- a/.github/workflows/tauri-build.yml
+++ b/.github/workflows/tauri-build.yml
@@ -326,7 +326,7 @@ jobs:
           echo "storeFile=$RUNNER_TEMP/keystore.jks" >> keystore.properties
 
       # Must run before the Google build: they share one Gradle output directory.
-      - name: Build FOSS Android APK
+      - name: Build FOSS Android APKs
         if: ${{ env.IS_RELEASE == 'true' }}
         shell: bash
         env:
@@ -335,13 +335,16 @@ jobs:
           # tauri-build validates every file in capabilities/, so the geolocation
           # permissions must be absent, not just unreferenced.
           rm src-tauri/capabilities/geolocation.json
-          pnpm tauri android build --apk --target aarch64 armv7 -- --no-default-features --features wry,matrix-crypto
+          pnpm tauri android build --apk --split-per-abi --target aarch64 armv7 -- --no-default-features --features wry,matrix-crypto
           git checkout -- src-tauri/capabilities/geolocation.json
-          OUT='src-tauri/gen/android/app/build/outputs/apk/universal/release'
-          APK=$(find "$OUT" -name '*.apk' -type f | head -1)
-          [ -n "$APK" ] || { echo 'FOSS APK not found' >&2; exit 1; }
           mkdir -p android-artifacts
-          mv "$APK" "android-artifacts/Sable-${VERSION}-android-universal-foss.apk"
+          for pair in 'arm64:arm64' 'arm:armv7'; do
+            FLAVOR=${pair%%:*}
+            ABI=${pair##*:}
+            APK=$(find "src-tauri/gen/android/app/build/outputs/apk/$FLAVOR/release" -name '*.apk' -type f | head -1)
+            [ -n "$APK" ] || { echo "FOSS $ABI APK not found" >&2; exit 1; }
+            mv "$APK" "android-artifacts/Sable-${VERSION}-android-${ABI}-foss.apk"
+          done
 
       - name: Build Android bundles
         shell: bash
diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index 71ad20ad3e..48dbff9b44 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -243,3 +243,8 @@ tauri-typegen = { git = "https://github.com/SableClient/tauri-typegen", branch =
 # tauri-plugin-store = { git = "https://github.com/tauri-apps/plugins-workspace", branch = "feat/cef" }
 # tauri-plugin-single-instance = { git = "https://github.com/tauri-apps/plugins-workspace", branch = "feat/cef" }
 # tauri-plugin-window-state = { git = "https://github.com/tauri-apps/plugins-workspace", branch = "feat/cef" }
+
+[profile.release]
+strip = "symbols"
+lto = "thin"
+codegen-units = 1
diff --git a/src-tauri/gen/android/app/build.gradle.kts b/src-tauri/gen/android/app/build.gradle.kts
index c65309122a..d40f98bae6 100644
--- a/src-tauri/gen/android/app/build.gradle.kts
+++ b/src-tauri/gen/android/app/build.gradle.kts
@@ -58,6 +58,9 @@ android {
         getByName("release") {
             signingConfig = signingConfigs.getByName("release")
             isMinifyEnabled = true
+            packaging {
+                jniLibs.useLegacyPackaging = true
+            }
             proguardFiles(
                 *fileTree(".") { include("**/*.pro") }
                     .plus(getDefaultProguardFile("proguard-android-optimize.txt"))
diff --git a/src/arrayCompat.test.ts b/src/arrayCompat.test.ts
new file mode 100644
index 0000000000..cf1c6deb6c
--- /dev/null
+++ b/src/arrayCompat.test.ts
@@ -0,0 +1,45 @@
+import { afterEach, describe, expect, it } from 'vitest';
+import { installChangeArrayByCopyPolyfill } from './arrayCompat';
+
+const proto = Array.prototype as {
+  toSorted?: unknown;
+  toReversed?: unknown;
+  with?: unknown;
+};
+const originals = {
+  toSorted: proto.toSorted,
+  toReversed: proto.toReversed,
+  with: proto.with,
+};
+
+afterEach(() => {
+  proto.toSorted = originals.toSorted;
+  proto.toReversed = originals.toReversed;
+  proto.with = originals.with;
+});
+
+describe('installChangeArrayByCopyPolyfill', () => {
+  it('installs the methods when the runtime does not provide them', () => {
+    Reflect.deleteProperty(proto, 'toSorted');
+    Reflect.deleteProperty(proto, 'toReversed');
+    Reflect.deleteProperty(proto, 'with');
+
+    installChangeArrayByCopyPolyfill();
+
+    const source = [3, 1, 2];
+    expect(source.toSorted((a, b) => a - b)).toEqual([1, 2, 3]);
+    expect(source.toReversed()).toEqual([2, 1, 3]);
+    // oxlint-disable-next-line unicorn/no-confusing-array-with
+    expect(source.with(-1, 9)).toEqual([3, 1, 9]);
+    expect(source).toEqual([3, 1, 2]);
+    expect(() => source.with(3, 9)).toThrow(RangeError);
+  });
+
+  it('installs them as non-enumerable', () => {
+    Reflect.deleteProperty(proto, 'toSorted');
+
+    installChangeArrayByCopyPolyfill();
+
+    expect(Object.keys([1, 2])).toEqual(['0', '1']);
+  });
+});
diff --git a/src/arrayCompat.ts b/src/arrayCompat.ts
new file mode 100644
index 0000000000..21c1bf07c3
--- /dev/null
+++ b/src/arrayCompat.ts
@@ -0,0 +1,40 @@
+type ChangeArrayByCopyMethods = {
+  toSorted?: unknown;
+  toReversed?: unknown;
+  with?: unknown;
+};
+
+function define(name: string, value: unknown): void {
+  // oxlint-disable-next-line no-extend-native
+  Object.defineProperty(Array.prototype, name, { value, writable: true, configurable: true });
+}
+
+export function installChangeArrayByCopyPolyfill(): void {
+  const proto = Array.prototype as ChangeArrayByCopyMethods;
+
+  if (!proto.toSorted) {
+    define('toSorted', function toSorted<T>(this: T[], compare?: (a: T, b: T) => number): T[] {
+      // oxlint-disable-next-line unicorn/no-array-sort
+      return Array.prototype.slice.call(this).sort(compare);
+    });
+  }
+
+  if (!proto.toReversed) {
+    define('toReversed', function toReversed<T>(this: T[]): T[] {
+      // oxlint-disable-next-line unicorn/no-array-reverse
+      return Array.prototype.slice.call(this).reverse();
+    });
+  }
+
+  if (!proto.with) {
+    define('with', function withAt<T>(this: T[], index: number, value: T): T[] {
+      const copy = Array.prototype.slice.call(this) as T[];
+      const target = index < 0 ? copy.length + index : index;
+      if (target < 0 || target >= copy.length) throw new RangeError(`Invalid index : ${index}`);
+      copy[target] = value;
+      return copy;
+    });
+  }
+}
+
+installChangeArrayByCopyPolyfill();
diff --git a/src/instrument.ts b/src/instrument.ts
index 5539aee377..17af86b1e1 100644
--- a/src/instrument.ts
+++ b/src/instrument.ts
@@ -7,6 +7,7 @@
  * - VITE_APP_VERSION: Release version for tracking
  */
 /* oxlint-disable no-console */
+import './arrayCompat';
 import './promiseCompat';
 import * as Sentry from '@sentry/react';
 import React from 'react';
diff --git a/vite.config.ts b/vite.config.ts
index aa91ce9aa5..6dfb3fb83b 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -80,7 +80,7 @@ const callEmbeddedDir = 'node_modules/@sableclient/sable-call-embedded/dist';
 const copyFiles = {
   targets: [
     {
-      src: callEmbeddedDir,
+      src: [callEmbeddedDir, `!${callEmbeddedDir}/**/*.map`],
       dest: 'public/element-call',
       rename: { stripBase: callEmbeddedDir.split('/').length },
     },