Lift nets and a wooden boat in the Mekong Delta at golden hour, clay model

How we check prices and facts

How VietSIM keeps eSIM prices current, where plan facts come from, what the 'prices checked' date means and how errors are corrected.

Last updated:

Every number on this site should be one you can rely on. This page explains where the numbers come from and how often they are refreshed.

eSIM store prices

  • Plan prices, data allowances and validity come from our plan catalogue and are refreshed automatically every 4 hours. If the catalogue cannot be reached, the site keeps the last copy it fetched rather than showing nothing.
  • The store shows a “prices checked” date under the plan list. It is the time the current prices were fetched, not a date typed in by hand.
  • The price on the plan is the price you pay in US dollars. Stripe shows the total including any tax before you confirm.
  • Stock is checked at checkout. If a plan is sold out at that moment, you are sent back with a notice instead of being charged.

Plan facts

  • Network, data per day or in total, validity and whether a Vietnamese phone number or calls are included come from the plan’s product data, not from our reading of marketing pages.
  • Plan notes in English (for example call minutes) are shown only where they add a fact the badges do not carry.
  • The activation deadline of a code is checked before sale: we only sell a code that stays activatable for at least 3 more days.

Help articles

Installation steps follow the current iPhone, Samsung and Google Pixel settings menus. Each article shows a “last checked” date. Facts that depend on a carrier (for example when validity starts counting) are published only after they have been confirmed with the carrier or on a real line; until then the article says so.

The plan catalogue (in preparation)

For the Vietnamese catalogue the same rules apply: each plan page will carry a last-checked date, discontinued plans stay listed with their end date and successor, and a registration syntax is published only after it has been verified on a line of that carrier.

Corrections

If you find a price or fact that is wrong, write to [email protected] with the page link. Confirmed errors are corrected on the page itself; when a correction changes what a customer paid or was told, we contact the customers affected.