There are a few things to check to ensure you receive notifications for new messages:
Device Notifications:
Enabled Notifications: Make sure notifications are enabled for the 2nd Phone Number app in your device's settings. This is typically under "Apps & Notifications" in your settings menu. Find "2nd Phone Number" and ensure notifications are switched on.
Internet Connection: Your device needs a stable internet connection (Wi-Fi or cellular data) to receive notifications.
App Settings:
In-App Notifications: While uncommon, double-check that notification settings within the 2nd Phone Number app itself are enabled. There might be a notification settings menu within the app.
Other Considerations:
Battery Optimization: Some battery optimization features might restrict app notifications. Check your device settings and ensure "2nd Phone Number" is excluded from any battery-saving restrictions.
Silent Mode: If your device is in silent mode, you might not hear the notification sound, but you should still see a visual notification on your screen.
By following these steps, you should receive timely notifications for new messages on your 2nd Phone Number app!