Currently I have an iPhone5 and a Motorola Q10. The iPhone5 takes a nano-SIM card while the Motorola Q10 takes a micro-SIM card. What I want to do is move my services on the nano-SIM to the micro-SIM so I can use the Motorola Q10. If I want, can I move my services back and forth between the two SIM cards so that I can use the different hardware using the 2 existing SIM cards? Or do I have to buy a new SIM card each time I switch back and forth?