Talk:Malaysia/@comment-132.147.93.149-20170922162240/@comment-24682153-20170923043250

This is really very misleading on their website. Check FAQ and T&Cs here:

https://www.xpax.com.my/asiapass

After checking it again, I now think it's a bundle with domestic Malaysian data plus IDD calls to certain Asian countries. So I took it off the list. Sorry for the misunderstanding.

I think it's best to buy a SIM at the airport in Vietnam. It will surely work for some days. Some users have been disconnected because of fake or unsufficient registration, but you can re-activate it again by going to a branded store with your ID later. At the airports these SIM card sellers are active 24/7 as long as there are internatl. flights coming in. But you rarely find Viettel there, more likely Mobifone or Vinaphone.