No SIM card installed iPad mini error after iOS8
I Have a second generation iPad mini w/ cellular data but I dont have a SIM card and haven't had one ever since the purchase Because I'm using wifi the whole time. Ever since the update to iOS8, I've been getting a no SIM card installed error message several times during navigation in Safari and other apps. my mum has a first generation iPad w/ cellular data, no sim installed but she doesn't get this error. Am I missing something in the settings?
thank you
iPad 2, iOS 8