So went to Guatemala for 10 days earlier this year. Got the 50 MB plan and only used 10 MB the entire trip. No problem. Just went to Hong Kong and Japan - same 50 MB plan. But this time in only 4 days I used up all 50 MB and had to shut off my data. My question is this: is there any way to track where this data is coming from? I cannot imagine I used 50MB simply from browsing. I do have Mobile Me now which syncs contacts and calendar - can that be it? Or does the fact I got voicemail in HK count as data against my plan? Any thoughts????