Hello Ewayne_R,
To help us better assist you, can you let us know more about the notification you're receiving? Is this message or notification related to a certain app? Does this happen only when connected to a specific network? That information will help us plan how to proceed.
If you want to manage notifications, please check out this link, which outlines those options and may help: Use notifications on your iPhone or iPad
Manage notifications
To manage your notifications from the Lock Screen or Notification Center:
1. Swipe left over an alert or group of alerts.
2. Tap Options, then select from these options:
• Mute for 1 Hour
• Mute for Today
• View Settings
• Turn Off
You can also tap View Settings to change your alert styles or alert settings for a specific app.
Thanks!