Who I have the same questioned this topic

I just received a new galaxy S6 from my mother.  I was able to transfer all of my content from one phone (old S4) to the new one easily using Samsung Smart Switch.  But unknown to me, the new SIM card is a nano (S4 is a Micro SIM).  Is there a SIM adapter that goes from Micro to Nano?  Or.....Can I bring in the new S6 device and get my cell number assigned to it?