4ka Carrier From
Slovakia

The 4ka Carrier From Slovakia is denoted by codes: 231 03. 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 Slovakia). The last numbers of the HNI code are equal with the MNC and this ID is given for the specific mobile network operator.

Besides 4ka Slovakia has assigned country code + 421. This number + 421 is equal with international calling code and it’s simply the telephone dialing prefixes used for calling 4ka numbers.
4ka uses 2 GSM bands, 0 UMTS bands, 3 and 0 CDMA bands.. You can read the specific frequency bands in the table below. All bands of the 4ka are display in MHz units.
Another important information in 4ka Slovakia architectures is the standard of used protocols. It also uses 4 protocols such as GSM, UMTS, LTE, CDMA. The ISO standard code of 4ka is SK. You can see more info about this mobile network operator at https://www.4ka.sk/. How to check 4ka coverage? How to check if your phone will work in Slovakia?