A. 1. Ensure that you are using the latest version of the FNBT & FCB app. Go to the App Store, search for the app, and check if an update is available. If so, update the app. 2. Check your internet connection. A weak or unstable connection can cause issues with mobile deposits. Switch to a stronger Wi-Fi network or use cellular data. 3. Clear the app cache by going to your iPhone settings, selecting the FNBT & FCB app, and choosing 'Clear Cache' if available. 4. Restart your iPhone to refresh the app's functionality. 5. If the problem persists, try deleting and reinstalling the app.