Will my Vietnamese bank account card or local SIM be blocked if my Vietnam visa expires and I stay on a 45-day visa-exempt entry stamp?

A Vietnamese bank card may be blocked once your visa expires. According to traveler reports, presenting only a 45-day entry stamp may not be sufficient to reactivate it; the bank can require proof that you have more than 45 days of legal stay remaining.

Before visiting a bank, check that your Vietnamese SIM is registered in your own name. Travelers report that banks may verify this; a number registered to a shop or another person can cause problems.

Do not assume you can use an already paid e-visa 45 days after entering Vietnam: if it has fixed validity dates, it expires on those dates. To extend your legal stay, you will need an appropriate new visa or an exit and re-entry under the rules in force.