| Data Usage Specifications | 3GB |
| Transmission Specifications | 4G |
| Signal Coverage Area | Vietnam |
| Mobile Carrier | Mobifone |
| Supported Sizes | 3-in-1 SIM |
| Hotspot Sharing | Available |
| Supported Frequencies(4G) | B1(2100 MHz) |
| Excludes | Voice calls, Texts |
| Not Supported | SIM-locked device, Carrier-customized device, Pocket WiFi, modified phones, 3G phones, translators |
| Reminders | ・Once the data usage exceeds the data limit of the selected plan, the 4G network speed will be reduced to 256kbps (unlimited data). SIM cards are charged on a daily basis and are valid for the selected number of days. Even if you activate your SIM card before 11:59 PM on the same day, it will count as one day! (Please note) ・This card can be activated within 6 months of purchase. After the expiration date, the card will become invalid. |
| Network Type | Roaming |
| Mobile Virtual Network Operator (MVNO) | CSL |
If you would like your data SIM card to be mailed to your designated address, please provide the company name or hotel name, the recipient's name (guest's name), and a verifiable reservation number or contact number.
This is a data SIM card and cannot be used to make or receive calls, text messages or top up additional credit.
This card can be activated within 6 months of purchase. After the expiration date, the card will become invalid.
Please note that signal quality may be affected by factors such as location, terrain, building obstruction, number of users, and weather.
*This product provides Chinese, English and Cantonese customer service
If you encounter activation issues 3 minutes after inserting the card, please follow the instructions below.
iOS: Settings > Mobile Data Network > APN > Enter "ctm-mobile" > Insert SIM card > Restart
Android: Settings > Mobile Networks > APN > Select Add APN and enter "ctm-mobile" > Insert SIM card > Restart