Sender ID:
All non-registered Sender IDs will be changed to a generic sender ID such as "NXSMS" or any International format number to ensure delivery.
Importance note:
Vietnam operators are doing heavy filtering on non-registered Sender IDs and contents. Therefore SMS contents may be modified, with brand names being removed/modifying some special characters such as "code"/adding random characters at front of the message body etc, in order to bypass the filtering and increase the delivery rate. For messages with OTP codes, it is also possible that the end users will receive a Text-to-Speech voice call delivering the OTP codes instead of receiving a SMS message. This is a feature to further improve the delivery rate and no extra charge will be incurred. We strongly recommend to have your Sender ID & contents being registered to avoid any changes/delivery issue.
Pre-registered Sender ID:
Please note we have an alternative and higher quality route towards Vietnam for notification and OTP messages, which ensures Sender ID and content delivery but at a different rate than our default routing. This route allows pre-registration of Alpha Sender IDs and contents, however it does not guarantee Delivery Receipts to be returned. Please check with your account manager about this if you are interested in it.
Content:
Gambling related contents are not allowed.
Contents promoting online games (or Apps) are also subject to approval by operators.
There are no additional content restrictions beyond those in our Acceptable Use Policy
Unicode:
Unicode is supported. However, delivery of messages in Chinese characters are not guaranteed, especially for those towards MobiFone.
Concatenated messages:
Concatenated messages are supported.
Other features/restrictions of note:
Delivery Receipts:
All Vietnam operators do not support handset Delivery Receipts. Some routes generate network Delivery Receipt and some don't even provide any Delivery Receipt, therefore a 'positive DLR' does not necessarily mean the message was received on the handset.
Spam Recognition:
Any messages sent with the same content to the same destination number within a 60 second interval would be classified as Spam and the duplicated messages within the 60s time frame will be rejected by the operators.
Virtual Numbers
Our LVNs in Vietnam are not to be used for any outbound Application-to-Person messages.
Prefix update
There is a prefix change from 15 Sep 2018. From now till 15 Nov 2018, the old prefixes and the new prefixes can be used interchangeably. From 15 Nov 2018, the old prefixes will be disabled and only the new prefixes can be used to terminate into Vietnam. Please find the table below on the prefix changes:
|
Telco |
Old number |
New number |
|
Vinaphone |
123 |
83 |
|
124 |
84 |
|
|
125 |
85 |
|
|
127 |
81 |
|
|
129 |
82 |
|
|
Viettel |
162 |
32 |
|
163 |
33 |
|
|
164 |
34 |
|
|
165 |
35 |
|
|
166 |
36 |
|
|
167 |
37 |
|
|
168 |
38 |
|
|
169 |
39 |
|
|
Mobifone |
120 |
70 |
|
121 |
79 |
|
|
122 |
77 |
|
|
126 |
76 |
|
|
128 |
78 |
|
|
Vietnamobile |
188 |
58 |
|
186 |
56 |
|
|
Gtel |
199 |
59 |
Links:
Global SMS Features Overview (Outbound only)
Global SMS Numbers Features Overview
