How can I use a smartphone overseas?

Episode 938 (27:34)

Christy from Valencia, CA

Christy is going to be traveling soon and is looking to buy a Samsung Galaxy Note II. Leo uses the Note II and loves the size. Can she get AT&T to unlock her phone? Leo says maybe, if she's nice and she reminds them that she's been a customer for a long time. At the very least, she can buy an unlocked phone from AT&T but she'll be paying full price for it. Then when traveling overseas, Christy can get a SIM card while she's in the UK and get unlimited data. She should make sure to forward her calls. Or better yet, she could use Skype.