Originally Posted by
dtsm
Never use ATT or Vz data when overseas - or else be prepared for sticker shock when you return home.
Just sign up for either of their international roaming plans - about $25 for 100 MB. After you use 100MB, they charge you another $25 for another 100 MB. It's more expensive than most local SIMs but cheaper than the pan-international roaming SIMs like Toggle, and far easier.
International roaming without a data plan is super expensive - about $20/MB.