I am lucky. Used to work for Apple, work paid for unlimited world wide data roaming.
After i left, I took the data plan with me. So i am paying $89 a month for unlimited world wide roaming
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Last month i downloaded 2GB data with 1.5GB in Asia.
If you guys can find ex apple employee that took their data plan with them. See if they are willing to let the account go so you can grandfather in
I always use free VoIP call such as viber and tango for all my call.