The CST carrier from Sao Tome and Principe is denoted by codes: 626 01. The followings IDs are called HNI (Home network identity). This code is created by the combination of two other Mobile Country Code (MCC) and Mobile Network Code (MNC). The first three numbers stand for the MCC and they are used in order to identify the region which the carried comes from (in the following example it’s Sao Tome and Principe). The last numbers of the HNI code are equal with the MNC and this ID is given for the specific mobile network operator.
Besides CST Sao Tome and Principe has assigned country code + 239. This number + 239 is equal with international calling code and it’s simply the telephone dialing prefixes used for calling CST numbers.
CST uses 1 GSM bands, 1 UMTS bands, 0 and 0 CDMA bands.. You can read the specific frequency bands in the table below. All bands of the CST are display in MHz units.
Another important information in CST Sao Tome and Principe architectures is the standard of used protocols. It also uses 3 protocols such as GSM, UMTS, LTE, CDMA.
The ISO standard code of CST is ST. You can see more info about this mobile network operator at https://www.cst.st/. How to check CST coverage? How to check if your phone will work in Sao Tome and Principe? Those information will help you figure out if your device will work in the CST roaming. Use out database and check out if your device will be locked or unlocked in CST.
Use our CARRIER LOOKUP TOOL in order to make sure that your phone number is using CST network.
If you'd like to find out whether your device is going to work with CST (Sao Tome and Principe), please check the details below:
All you need to do is compare bands specification from your mobile network with the bands used in your device. You can check the supported bands for your phone by using out phone database.
| Name | CST |
|---|---|
| Company | Companhia Santomense de Telecomunicacoes, SARL |
| Country |  Sao Tome and Principe |
| Country ISO | ST |
| Country code | + 239 |
| Carrier website | https://www.cst.st/ |
| Carrier codes |
|
| Mobile prefix | 90 |
| Coverage map | Unknown |
| Subscribers | 78 000 (September 2009) |
| GSM bands |
|
| GSM protocols |
|
| UMTS bands |
|
| UMTS protocols |
|
CHECK IMEI 
