Locked out of my phone!

Hi guys,

I used SwiftKey to input my original pin and then changed simcards and now I’m locked out of my phone!?!?
The pin I entered in the beginning is not working and I can’t use my phone at all, please can someone help me? :frowning:
The number I input as a friends number is not receiving any sms’s either…

It’s a Samsung Galaxy S4.