Mobile Services not appearing in settings on iPad

The model number that you quote (MPQ03NF/A) corresponds with an iPad 10, 64GB, Silver, WiFi Only.

If your iPad10 is Cellular model, it will have an accessible SIM tray in the edge of the iPad:

iPad (10th generation) - Apple Support

Your iPad has iPadOS 18.1 installed; your iPad model is something else entirely.

You can find your iPad model name (and other information) here:

Settings > General > About > Model Name

Not sure which iPad you have? Identify your iPad model.

If your iPad is not operating as expected, try a forced-restart - as this will often clear an isolated software issue:

Force restart iPad (models with Face ID or with Touch ID in the top button)

If your iPad doesn’t have the Home button, do the following:

1. Press and quickly release the volume button nearest to the top button.
2. Press and quickly release the volume button farthest from the top button.
3. Press and hold the top button.
4. When the Apple logo appears, release the top button.

Force restart iPad (models with the Home button)

Press and hold the top button and the Home button at the same time. When the Apple logo appears, release both buttons.

If the problem persists after performing the restart, next a reset of your iPad's Network settings is recommended:

Settings > General > Transfer or Reset iPad > Reset > Reset Network Settings

Otherwise, it may be necessary to fully reset your iPad settings. While this reset will not cause any loss of data, as a precaution, it is always wise to ensure that you have a current iCloud or iTunes backup before performing the reset:

How to back up your iPhone, iPad, and iPod touch - Apple Support

When you are happy to proceed, you can perform the reset from iPad settings:

Settings > General > Transfer or Reset iPad > Reset > Reset All Settings

If the problem still doesn’t clear, the next step is to reset the iPad to factory settings:

Restore your iPhone, iPad, or iPod to factory settings - Apple Support

Otherwise, you would be best advised to seek assistance directly from Apple Support. You can contact the Support Team using the Support link at top-right or bottom-left of this page. Alternatively and perhaps easier, you can initiate and manage your support cases using the excellent Apple Support App. If not already installed on your iPad, the App can be downloaded from the App Store:

https://apps.apple.com/app/apple-support/id1130498044

You might also visit the Genius Bar at your local Apple Store or Apple Authorised Service Provider (AASP) - where the technicians will be able to test and assess your iPad - and you can explore your available options:

Genius Bar Reservation and Apple Support Options - Apple

No mention here of your iPad model. Do you have a WiFi+Cellular model iPad? If you have a WiFi Only model, you won't see any Mobile/Cellular services in iPad settings.

If you do have WiFi+Cellular model, have you inserted a physical DataSIM? Unless your iPad is equipped with eSIM, or you have installed a valid DataSIM card, you won't be able to configure Cellular services.

Suefrance wrote:

My VPN has disappeared - can you suggest how to retrieve that?

Are you using a VPN App, or some other security App that provides a VPN connection (e.g. Norton)? If yes, check the associated App.

Otherwise, have you manually configured a VPN connection?

Settings > General > VPN & Device Management > VPN