Hey,

so my friend is planning to travel abroad soon and she wants to be able to use her phone in Asia while traveling. The phone is an S4 running Anroid 4.4.4 with T-mobile. Is there any extra steps we need to do to make the phone useable over in Asia? (rooting/unlocking?) I've only jailbreak and unlock iphones so I really have no clue bout how Android works in general. Thanks for the help!