Traveling to Italy and have an iPhone 6 with Verizon. My question is can i buy a Euro sim card before i leave to test it? Verizon says my phone is unlocked but when i called and let them know i was leaving, the rep emailed me a chart of their international fees and they aren't cheap. Just want to be sure i can use it in Italy without having to worry about the overage fees and such. Thanks in advance.