Talk:Vietnam/@comment-183.182.118.42-20190228165914/@comment-202.95.77.83-20190313002234

in vietnam, there are 2 types of prepaid plan.

if you are on the first type, you get validity added upon topup. the number of days you will receive is dependent of the topup amount.

on the 2nd and more common plan, you get validity extended by 60 days on every use (credit deduction) or topup. if there is no activity for 60 days, your number will fall into grace period with incoming calls and texts blocked. if there is no topup within 10 days, the operator will enforce 2-way blocking. the length of 2-way blocking is operator dependent. viettel 15 days, vina and mobi 30 days. after that if there is still no topup, you will lose your number and credit balance.