diff --git a/native/account/registration/missing-registration-data/missing-registration-data-handler.react.js b/native/account/registration/missing-registration-data/missing-registration-data-handler.react.js
new file mode 100644
--- /dev/null
+++ b/native/account/registration/missing-registration-data/missing-registration-data-handler.react.js
@@ -0,0 +1,40 @@
+// @flow
+
+import { useNavigation } from '@react-navigation/native';
+import * as React from 'react';
+
+import { isLoggedIn } from 'lib/selectors/user-selectors.js';
+import { accountHasPassword } from 'lib/shared/account-utils.js';
+
+import { commCoreModule } from '../../../native-modules.js';
+import { CreateMissingSIWEBackupMessageRouteName } from '../../../navigation/route-names.js';
+import { useSelector } from '../../../redux/redux-utils.js';
+
+function MissingRegistrationDataHandler(): React.Node {
+  const loggedIn = useSelector(isLoggedIn);
+  const navigation = useNavigation();
+  const currentUserInfo = useSelector(state => state.currentUserInfo);
+
+  React.useEffect(() => {
+    if (!loggedIn || accountHasPassword(currentUserInfo)) {
+      return;
+    }
+
+    void (async () => {
+      const nativeSIWEBackupSecrets =
+        await commCoreModule.getSIWEBackupSecrets();
+
+      if (nativeSIWEBackupSecrets) {
+        return;
+      }
+
+      navigation.navigate<'CreateMissingSIWEBackupMessage'>({
+        name: CreateMissingSIWEBackupMessageRouteName,
+      });
+    })();
+  }, [currentUserInfo, loggedIn, navigation]);
+
+  return null;
+}
+
+export { MissingRegistrationDataHandler };
diff --git a/native/account/registration/missing-registration-data/missing-siwe-backup-message.react.js b/native/account/registration/missing-registration-data/missing-siwe-backup-message.react.js
new file mode 100644
--- /dev/null
+++ b/native/account/registration/missing-registration-data/missing-siwe-backup-message.react.js
@@ -0,0 +1,61 @@
+// @flow
+
+import invariant from 'invariant';
+import * as React from 'react';
+import { SafeAreaView } from 'react-native-safe-area-context';
+
+import { type SIWEResult } from 'lib/types/siwe-types.js';
+
+import { type RootNavigationProp } from '../../../navigation/root-navigator.react.js';
+import { type NavigationRoute } from '../../../navigation/route-names.js';
+import { useStyles } from '../../../themes/colors.js';
+import { RegistrationContext } from '../registration-context.js';
+import { CreateSIWEBackupMessageBase } from '../siwe-backup-message-creation.react.js';
+
+type Props = {
+  +navigation: RootNavigationProp<'CreateMissingSIWEBackupMessage'>,
+  +route: NavigationRoute<'CreateMissingSIWEBackupMessage'>,
+};
+
+function CreateMissingSIWEBackupMessage(props: Props): React.Node {
+  const styles = useStyles(unboundStyles);
+  const registrationContext = React.useContext(RegistrationContext);
+  invariant(registrationContext, 'registrationContext should be set');
+  const { cachedSelections, setCachedSelections } = registrationContext;
+
+  const onSuccessfulWalletSignature = React.useCallback(
+    (result: SIWEResult) => {
+      const { message, signature } = result;
+      setCachedSelections(oldUserSelections => ({
+        ...oldUserSelections,
+        siweBackupSecrets: { message, signature },
+      }));
+    },
+    [setCachedSelections],
+  );
+
+  React.useEffect(() => {
+    if (cachedSelections.siweBackupSecrets) {
+      props.navigation.goBack();
+    }
+  }, [cachedSelections.siweBackupSecrets, props]);
+
+  return (
+    <SafeAreaView edges={safeAreaEdges} style={styles.container}>
+      <CreateSIWEBackupMessageBase
+        onSuccessfulWalletSignature={onSuccessfulWalletSignature}
+      />
+    </SafeAreaView>
+  );
+}
+
+const safeAreaEdges = ['top'];
+const unboundStyles = {
+  container: {
+    flex: 1,
+    backgroundColor: 'panelBackground',
+    justifyContent: 'space-between',
+  },
+};
+
+export default CreateMissingSIWEBackupMessage;
diff --git a/native/navigation/root-navigator.react.js b/native/navigation/root-navigator.react.js
--- a/native/navigation/root-navigator.react.js
+++ b/native/navigation/root-navigator.react.js
@@ -53,8 +53,10 @@
   UserProfileBottomSheetNavigatorRouteName,
   KeyserverSelectionBottomSheetRouteName,
   ConnectFarcasterBottomSheetRouteName,
+  CreateMissingSIWEBackupMessageRouteName,
 } from './route-names.js';
 import LoggedOutModal from '../account/logged-out-modal.react.js';
+import CreateMissingSIWEBackupMessage from '../account/registration/missing-registration-data/missing-siwe-backup-message.react.js';
 import RegistrationNavigator from '../account/registration/registration-navigator.react.js';
 import TermsAndPrivacyModal from '../account/terms-and-privacy-modal.react.js';
 import ThreadPickerModal from '../calendar/thread-picker-modal.react.js';
@@ -291,6 +293,10 @@
         component={ConnectFarcasterBottomSheet}
         options={modalOverlayScreenOptions}
       />
+      <Root.Screen
+        name={CreateMissingSIWEBackupMessageRouteName}
+        component={CreateMissingSIWEBackupMessage}
+      />
     </Root.Navigator>
   );
 }
diff --git a/native/navigation/route-names.js b/native/navigation/route-names.js
--- a/native/navigation/route-names.js
+++ b/native/navigation/route-names.js
@@ -123,6 +123,8 @@
 export const CoolOrNerdModeSelectionRouteName = 'CoolOrNerdModeSelection';
 export const ConnectEthereumRouteName = 'ConnectEthereum';
 export const CreateSIWEBackupMessageRouteName = 'CreateSIWEBackupMessage';
+export const CreateMissingSIWEBackupMessageRouteName =
+  'CreateMissingSIWEBackupMessage';
 export const ExistingEthereumAccountRouteName = 'ExistingEthereumAccount';
 export const ConnectFarcasterRouteName = 'ConnectFarcaster';
 export const UsernameSelectionRouteName = 'UsernameSelection';
@@ -177,6 +179,7 @@
   +TunnelbrokerMenu: void,
   +KeyserverSelectionBottomSheet: KeyserverSelectionBottomSheetParams,
   +ConnectFarcasterBottomSheet: void,
+  +CreateMissingSIWEBackupMessage: void,
 };
 
 export type MessageTooltipRouteNames =
diff --git a/native/root.react.js b/native/root.react.js
--- a/native/root.react.js
+++ b/native/root.react.js
@@ -40,6 +40,7 @@
 import { TunnelbrokerProvider } from 'lib/tunnelbroker/tunnelbroker-context.js';
 import { actionLogger } from 'lib/utils/action-logger.js';
 
+import { MissingRegistrationDataHandler } from './account/registration/missing-registration-data/missing-registration-data-handler.react.js';
 import { RegistrationContextProvider } from './account/registration/registration-context-provider.react.js';
 import NativeEditThreadAvatarProvider from './avatars/native-edit-thread-avatar-provider.react.js';
 import BackupHandler from './backup/backup-handler.js';
@@ -298,6 +299,7 @@
             </DeepLinksContextProvider>
           </ChatContextProvider>
           <NavigationHandler />
+          <MissingRegistrationDataHandler />
         </BottomSheetModalProvider>
       </NavigationContainer>
     );