with regular passenger services reaching over 6 million passengers in 2022 with Belgrade Nikola Tesla Airport serving bulk of it, being a hub of flagship carrier Air Serbia which flies to 80 destinations in 32 countries (including intercontinental flights to New York City, Chicago and Tianjin) and carried 2.75 million passengers in 2022. Serbia has a developed inland water transport since there are of navigable inland waterways ( of navigable rivers and of navigable canals), which are almost all located in northern third of the country. The most important inland waterway is the Danube (part of Pan-European Corridor VII). Other navigable rivers include Sava, Tisza, Begej and Timiş Rivers, all of which connect Serbia with Northern and Western Europe through the Rhine–Main–Danube Canal and North Sea route, to Eastern Europe via the Tisza, Begej and Danube Black Sea routes, and to Southern Europe via the Sava river. More than 8 million tonnes of cargo were transported on Serbian rivers and canals in 2018 while the largest river ports are: Novi Sad, Belgrade, Pančevo, Smederevo, Prahovo and Šabac. Telecommunications Fixed telephone lines connect 81% of households in Serbia, and with about 9.1 million users the number of cellphones surpasses the total population of by 28%. The largest mobile operator is Telekom Srbija with 4.2 million subscribers, followed by Telenor with 2.8 million users and A1 with about 2 million. Some 58% of households have fixed-line (non-mobile) broadband Internet connection while 67% are provided with pay television services (i.e. 38% cable television, 17% IPTV, and 10% satellite). Digital television transition has been completed in 2015 with DVB-T2 standard for signal transmission. Tourism Serbia is not a mass-tourism destination but nevertheless has a diverse range of touristic products. In 2019, total of over 3.6 million tourists were recorded in accommodations, of which half were foreign. Foreign exchange earnings from tourism were estimated at $1.5 billion. Tourism is mainly focused on the mountains and spas of the country, which are mostly visited by domestic tourists, as well as Belgrade and, to a lesser degree, Novi Sad, which are preferred choices of foreign tourists (almost two-thirds of all foreign visits are made to these two cities). The most famous mountain resorts are Kopaonik, Stara Planina and Zlatibor. There are also many spas in Serbia, the biggest of which are Vrnjačka Banja, Soko Banja, and Banja Koviljača. City-break and conference tourism is developed in Belgrade and