Talk:Vietnam/@comment-101.51.76.71-20171221050725/@comment-24682153-20171221120444

Hi John.

The periods are rather short. Credit validity depends on the topup value: a VND 5,000 gives only 2 days, while a VND 500,000 recharge gives 215 days. See here: http://vinaphone.com.vn/products/vinacard#quydinh-tab

The rest I quote from Vinaphone in Vietnamese English: "When the term is expired, customers shall have additional 10 days to receive calls and top up card. After 10 days, if customers do not top up then the subscription number shall be blocked on two-direction basis.

The term for two-direction blockage is 30 days. After the term for two-way blockage, if customers do not top up then the subscription number shall be retrieved." http://vinaphone.com.vn/products/vinacard#usage-tab

It's similar with the other providers.