Firing up an old 5S and was curious, and I'm on Verizon...can I just put the sim from my 6 Plus into the 5S and be good to go? What do I need to do? I've never done this before. Thanks!
With Verizon, you'll also need to switch the MEID on your line on your account to the 5S - on your MyVerizon account management site, or via customer service - or, an Verizon store.