Talk:Vietnam/@comment-175.137.169.1-20170605021233/@comment-24682153-20170605101014

Yes, you can. But it's not guaranteed that these SIM cards are properly registered on your name. They might work for your stay or not. You can do the check shown in the Basics chapter. Don't rely on what the sales agent tells you. If it isn't properly registered and stops to work, then you will need to go to a branded store of the provider with your passport and register to regain your plan and credit.