Why is my mobile device’s screen showing random pop-ups or ads?

Check Your Apps: Check to see if you have any apps installed that can display/insert pop-ups.

You can uninstall them or update your settings to prevent them from showing.
Check Your Device’s Security: Make sure your mobile device has the latest security updates.

You can check with your device’s manufacturer and/or your service provider to find out how to safely and securely update your device.
Check Your Browser Settings:Disable any pop-up blocker(s) or add-ons/extensions that are enabled in your browser, as they can sometimes interfere with functioning properly.

Make sure your browser is set to display notifications for certain websites.
Check Your Network Settings: Check to see if your network’s firewall or content filter has any settings enabled that could be blocking ads.

You can check with your network administrator to make sure that the settings are enabled.