diff --git a/src/lib/appServiceWorker.ts b/src/lib/appServiceWorker.ts
index e9f3af8..307cbf9 100644
--- a/src/lib/appServiceWorker.ts
+++ b/src/lib/appServiceWorker.ts
@@ -12,17 +12,24 @@ let started = false;
 export function registerAppServiceWorker(): void {
   if (started || typeof window === 'undefined' || !('serviceWorker' in navigator)) return;
   if (Capacitor.isNativePlatform()) {
-    // The native shell must never inherit an old web app-shell worker.
-    if ('serviceWorker' in navigator) {
-      void navigator.serviceWorker.getRegistrations()
-        .then((regs) => regs.forEach((reg) => { try { reg.unregister(); } catch { /* ignore */ } }))
-        .catch(() => undefined);
-    }
-    if (typeof caches !== 'undefined') {
-      void caches.keys()
-        .then((keys) => keys.filter((key) => key.startsWith('skate-spots-shell-'))
-          .forEach((key) => { void caches.delete(key).catch(() => undefined); }))
-        .catch(() => undefined);
+    // The native shell must never inherit an old web app-shell worker. Some
+    // Android WebViews expose a partial/absent Service Worker API, so every
+    // call is feature-checked and wrapped — this cleanup must never abort React
+    // boot (that produced a black screen after the native splash).
+    try {
+      if (navigator.serviceWorker && typeof navigator.serviceWorker.getRegistrations === 'function') {
+        void navigator.serviceWorker.getRegistrations()
+          .then((regs) => regs.forEach((reg) => { try { reg.unregister(); } catch { /* ignore */ } }))
+          .catch(() => undefined);
+      }
+      if (typeof caches !== 'undefined' && typeof caches.keys === 'function') {
+        void caches.keys()
+          .then((keys) => keys.filter((key) => key.startsWith('skate-spots-shell-'))
+            .forEach((key) => { void caches.delete(key).catch(() => undefined); }))
+          .catch(() => undefined);
+      }
+    } catch {
+      // Best-effort only; boot must continue.
     }
     return;
   }