diff --git a/native/qr-code/qr-code-screen.react.js b/native/qr-code/qr-code-screen.react.js
index ee25b7175..3ebfbee83 100644
--- a/native/qr-code/qr-code-screen.react.js
+++ b/native/qr-code/qr-code-screen.react.js
@@ -1,167 +1,184 @@
 // @flow
 
 import * as React from 'react';
 import { View, Text } from 'react-native';
 import QRCode from 'react-native-qrcode-svg';
 
 import { qrCodeLinkURL } from 'lib/facts/links.js';
 import { useSecondaryDeviceLogIn } from 'lib/hooks/login-hooks.js';
 import { useQRAuth } from 'lib/hooks/qr-auth.js';
 import { uintArrayToHexString } from 'lib/media/data-utils.js';
 import { useTunnelbroker } from 'lib/tunnelbroker/tunnelbroker-context.js';
 import type { BackupKeys } from 'lib/types/backup-types.js';
 import { getContentSigningKey } from 'lib/utils/crypto-utils.js';
+import { getMessageForException } from 'lib/utils/errors.js';
 
 import type { QRCodeSignInNavigationProp } from './qr-code-sign-in-navigator.react.js';
 import {
   composeTunnelbrokerQRAuthMessage,
   parseTunnelbrokerQRAuthMessage,
 } from './qr-code-utils.js';
 import { commCoreModule } from '../native-modules.js';
 import type { NavigationRoute } from '../navigation/route-names.js';
 import { useStyles } from '../themes/colors.js';
 import * as AES from '../utils/aes-crypto-module.js';
+import {
+  appOutOfDateAlertDetails,
+  unknownErrorAlertDetails,
+} from '../utils/alert-messages.js';
 import Alert from '../utils/alert.js';
 
 type QRCodeScreenProps = {
   +navigation: QRCodeSignInNavigationProp<'QRCodeScreen'>,
   +route: NavigationRoute<'QRCodeScreen'>,
 };
 
 function performBackupRestore(backupKeys: BackupKeys): Promise<void> {
   const { backupID, backupDataKey, backupLogDataKey } = backupKeys;
   return commCoreModule.restoreBackupData(
     backupID,
     backupDataKey,
     backupLogDataKey,
   );
 }
 
 // eslint-disable-next-line no-unused-vars
 function QRCodeScreen(props: QRCodeScreenProps): React.Node {
   const [qrData, setQRData] =
     React.useState<?{ +deviceID: string, +aesKey: string }>();
 
   const { setUnauthorizedDeviceID } = useTunnelbroker();
   const generateQRCode = React.useCallback(async () => {
     try {
       const [ed25519, rawAESKey] = await Promise.all([
         getContentSigningKey(),
         AES.generateKey(),
       ]);
       const aesKeyAsHexString: string = uintArrayToHexString(rawAESKey);
 
       setUnauthorizedDeviceID(ed25519);
       setQRData({ deviceID: ed25519, aesKey: aesKeyAsHexString });
     } catch (err) {
       console.error('Failed to generate QR Code:', err);
     }
   }, [setUnauthorizedDeviceID]);
 
   const logInSecondaryDevice = useSecondaryDeviceLogIn();
   const performRegistration = React.useCallback(
     async (userID: string) => {
       try {
         await logInSecondaryDevice(userID);
       } catch (err) {
         console.error('Secondary device registration error:', err);
-        Alert.alert('Registration failed', 'Failed to upload device keys', [
-          { text: 'OK' },
-        ]);
+        const messageForException = getMessageForException(err);
+        if (
+          messageForException === 'client_version_unsupported' ||
+          messageForException === 'Unsupported version'
+        ) {
+          Alert.alert(
+            appOutOfDateAlertDetails.title,
+            appOutOfDateAlertDetails.message,
+          );
+        } else {
+          Alert.alert(
+            unknownErrorAlertDetails.title,
+            unknownErrorAlertDetails.message,
+          );
+        }
         void generateQRCode();
       }
     },
     [logInSecondaryDevice, generateQRCode],
   );
 
   React.useEffect(() => {
     void generateQRCode();
   }, [generateQRCode]);
 
   const qrCodeURL = React.useMemo(
     () => (qrData ? qrCodeLinkURL(qrData.aesKey, qrData.deviceID) : undefined),
     [qrData],
   );
 
   const qrAuthInput = React.useMemo(
     () => ({
       secondaryDeviceID: qrData?.deviceID,
       aesKey: qrData?.aesKey,
       performSecondaryDeviceRegistration: performRegistration,
       composeMessage: composeTunnelbrokerQRAuthMessage,
       processMessage: parseTunnelbrokerQRAuthMessage,
       performBackupRestore,
     }),
     [qrData, performRegistration],
   );
   useQRAuth(qrAuthInput);
 
   const styles = useStyles(unboundStyles);
   return (
     <View style={styles.container}>
       <Text style={styles.heading}>Log in to Comm</Text>
       <Text style={styles.headingSubtext}>
         Open the Comm app on your phone and scan the QR code below
       </Text>
       <QRCode value={qrCodeURL} size={200} />
       <View style={styles.instructionsBox}>
         <Text style={styles.instructionsTitle}>How to find the scanner:</Text>
         <Text style={styles.instructionsStep}>
           <Text>Go to </Text>
           <Text style={styles.instructionsBold}>Profile</Text>
         </Text>
         <Text style={styles.instructionsStep}>
           <Text>Select </Text>
           <Text style={styles.instructionsBold}>Linked devices </Text>
         </Text>
         <Text style={styles.instructionsStep}>
           <Text>Click </Text>
           <Text style={styles.instructionsBold}>Add </Text>
           <Text>on the top right</Text>
         </Text>
       </View>
     </View>
   );
 }
 
 const unboundStyles = {
   container: {
     flex: 1,
     alignItems: 'center',
     marginTop: 125,
   },
   heading: {
     fontSize: 24,
     color: 'panelForegroundLabel',
     paddingBottom: 12,
   },
   headingSubtext: {
     fontSize: 12,
     color: 'panelForegroundLabel',
     paddingBottom: 30,
   },
   instructionsBox: {
     alignItems: 'center',
     width: 300,
     marginTop: 40,
     padding: 15,
     borderColor: 'panelForegroundLabel',
     borderWidth: 2,
     borderRadius: 8,
   },
   instructionsTitle: {
     fontSize: 12,
     color: 'panelForegroundLabel',
     paddingBottom: 15,
   },
   instructionsStep: {
     fontSize: 12,
     padding: 1,
     color: 'panelForegroundLabel',
   },
   instructionsBold: {
     fontWeight: 'bold',
   },
 };
 
 export default QRCodeScreen;