Support Center

We’re here for you. Find answers and advice for getting the most out of TeleSign.

Vietnam - Messaging Regulations

Last Updated: May 21, 2019 08:36AM UTC
General Information:
  • Handset delivery supported
  • Concatenated (long) messages supported
  • Delivery to ported numbers supported

Supported Traffic Types:
One Time Passwords (OTP)    YES
Alerts, Reminders, Notifications (ARN)    YES
Marketing (MKT)    YES*
*All marketing campaigns must be reported to the provider at least 24 hours in advance.

- Regulator Website 

Supported SenderID Types:
Alphanumeric    YES*
Short Code    YES
Local Long Code    NO
International Long Code    NO
* Sender ID pre-registration required

Content Restrictions:
In-app charging policies:

Games or Applications should comprise clear information (price, charging, name of apps/game) and obtain end-user’s confirmation before sending any MO to short-code.

Confirmation top-up windows should show name, price, hotline and yes/no button

Reply MT content should have game or app name, price and hotline .

User complaints must be resolved in 24 hours.
Maximum Message Length:
Encoding Used Single Message Long Message
GSM 160 153 (per message)
Unicode 70 67 (per message)
ASCII 160 153 (per message)
Latin-1 140 134 (per message)

Forbidden Content Topics:
  • Adult content
  • Mobile gambling/casinos
  • Sportsbook
  • Lottery
  • Charitable Services
  • Voting

Contact Us
seconds ago
a minute ago
minutes ago
an hour ago
hours ago
a day ago
days ago
Invalid characters found