Most unlocked mobile phones are able to be used on roaming however network charges apply. Azercell, Bakcell and Azerfon are often recommended to tourists due to the variety of tariffs available and the help available in a variety of languages. Other mobile phone operators include Aztelekom, AzEuroTel, Caspian Telecom and Catel Eurasiacom. As of June 2014, approximately 95% of all main lines are digitized and provide excellent quality services for the region. The remaining 5% is in modernization process. International system Azerbaijan is connected to the Trans-Asia-Europe (TAE) fiber-optic cable providing international connectivity to the rest of the World. Additionally the old Soviet system by microwave radio relay and landline connections to other countries of the Commonwealth of Independent States is still available, and by satellite earth stations. The main backbones of Azerbaijani networks are made by E3 or STM-1 lines via microwave units across whole country with many passive retranslations. There are two major private companies in Azerbaijan that connects the country to the global Internet network. These are AzerTelecom and Delta Telekom companies. Radio As of 2014, Azerbaijan has 9 AM stations, 17 FM stations, and one shortwave station. Additionally, there are approximately 4,350,000 radios in existence. Primary network provider is the Ministry of Communications and Information Technologies of Azerbaijan (MCIT). According to MCIT, the FM radio penetration rate is 97% according to 2014 data.Radio broadcast stations: 26 (2014) Radio Respublika - FM 105.0 MHz İctimai FM - FM 90 MHz Naxçıvan Dövlət radiosu (Nakhchivan State Radio) - FM 103 MHz Naxçıvanın səsi (Voice of Nakhchivan) - FM 103 MHz ARAZ FM - FM 103.3 MHz Radio Enerji (formerly Antenn FM) - FM 101.1 MHz ANS ChM - FM 102 MHz Avto FM - FM 107.7 MHz Azad Azərbaycan FM - FM 106 MHz Bürc FM FM 100.5 MHz Kəpəz FM - FM 90.3 MHz Lider FM - FM 107 MHz Media FM - FM 105.5 MHz Space FM - FM 104 MHz Xəzər FM - FM 103 MHzRadios: 175,000 (1997) Television Azerbaijan has a total of 47 television channels, of which 4 are public television channels and 43 are private television channels of which 12 are national television channels and 31 regional television channels. According to the Ministry of Communications and Information Technologies of Azerbaijan (MCIT), the television penetration rate is 99% according to 2014 data. The penetration rate of cable television in Azerbaijan totaled 28.1% of