I'm about to make the leap from my 2012 iPhone 5 to a 64 GB iPhone SE model A1662. As you can see, I like to hold on to my devices for a long time so I want to make sure I'm making a solid, long-term decision. I've scoured the web and these forums for answers to these questions but am having trouble making sense of what I find. Can you advise me, please? 1. Does it matter from what carrier I buy A1662? That is, after satisfying any kind of carrier agreement, can I unlock the phone and go from, say, Verizon to AT&T? 2. Apple's LTE page doesn't specify that A1662 will work in countries around the world. Does this mean that it will still work on 4G? I plan to go to to Ireland, Norway, Sweden, and Denmark and hope it will work there.