- The area telephone code for Banja Luka within the landline phone network is 051, that is +38751 (if a call is made from abroad);

- When you make an international call from Banja Luka, you are supposed to dial first 00 and then the national dial-up number of the country, the area code and finally the user phone number. If you do it from a cell phone, it is enough to dial + (instead of two zeroes);
 
- Mobile pre-paid vouchers with a new cell phone number and the sum of 5,10 EUR may be bought at the store market "Kastel", shopping mall "Zenit", contact center "Lauš" and at the Faculty of Electrical Engineering at the price of  5,10 EUR. Mobile pre-paid vouchers may be bought at all the kiosks, markets and supermarkets, and the cheapest one is 2,00 BAM (1,02 EUR)