Q: Way does my wifi only iPad 3 say no sim

Hey there Steve01016,

It sounds like you are gettting a message saying No SIM on your Wi-Fi only iPad. It seems to me that this should be a software issue, so I would start by quitting all the apps on the iPad:

iOS: Force an app to close

Double-click the Home button.

Swipe left or right until you have located the app you wish to close.

Swipe the app up to close it. 

When you have done that restart the device and test the issue again:

iOS: Turning off and on (restarting) and resetting

If it persists, I would next backup your device to iTunes with this article:

iOS: How to back up and restore your content

And restore it first as a new device to test if it stops giving you the message:

Use iTunes to restore your iOS device to factory settings

If not then restore from your backup and test again to verify they have stopped.

Back up and restore your iOS device with iCloud or iTunes

Now, that can be a ltg to go through, so you might want to double check to see if perhaps there is a SIM port on the iPad:

Remove the SIM card from your iPhone or iPad

Thank you for using Apple Support Communities.

All the very best,

Sterling