Does the samsung galaxy 6 have a sim card that can be changed?

[AC Question]

Rather than buying a new phone I'd like to have a new IP address

 

[srkmagnus]

I'm not sure what you mean by changing the IP address, but yes, you can change the SIM card on the Galaxy S6: How do I insert the SIM card into my Samsung Galaxy S6?

You'll need to contact your wireless carrier for information on obtaining and/or activating the new SIM.