RTÜK) and Information and Communication Technologies Authority (abbreviated BTK). While internet and point to point telecommunication is controlled by BTK, radio and television broadcast is controlled by RTÜK. Apple President Recep Tayyip Erdogan has publicly used an iPhone, including famously reaching out to his supporters via FaceTime during the 2016 Turkish coup d'état attempt. In 2018 Erdogan called for a boycott of American electronics in what The Washington Post called a "a feud with the Trump administration" over the detention of American evangelical pastor Andrew Brunson that coincided with the 2018–2021 Turkish currency and debt crisis. Erdogan noted Samsung and the Turkish Vestel Venus phone as alternative to the US made iPhone. The Vestel Venus retailed from $99 in 2018. Some Vestel phones already use the Taiwanese MediaTek chip, but others use semiconductors made by American company Qualcomm. The phones also use the Android operating system. After the announcement Vestel shares rose on the Istanbul stock exchange. According to Bloomberg News, Vestel's market share in Turkey was around 6% at the end of 2016, while Apple sold over 200 million iPhones in 2017. Mashable reported that "Turkey relies on Apple more than Apple relies on Turkey". According to Mashable, Apples market share stood in Turkey around 17.41, while Vestel's was much lower, around 2.08% and that "there are more than 8.5 times more iPhone users worldwide than there are people in Turkey." According to Bloomberg News, the Vestel Venus phones "aren't among Apple's global rivals". After Erdogan's announcement, the company's valuation reached $450 million, compared to Apple's valuation around $1 trillion. Made in Turkey mobile devices In January 2021 Daily Sabah reported that Samsung had started local manufacture a line of mobile phones in Turkey. Samsung is the leader of the Turkish mobile market with 40% market share. Chinese firm Oppo released their first Made in Turkey smartphone in March 2021 with a retail price around $346. The phone has 64 GB storage, microSD support, 6.5" display and a MediaTek Helio P35 chipset. See also HSTR LAN Media in Turkey Internet in Turkey List of radio stations in Turkey Radio and television technology in Turkey Telephone numbers in Turkey Television in Turkey Timeline of broadcasting in Turkey List of countries by number of mobile phones in use Turkey, 19th List of countries by smartphone penetration Turkey, 11st List of countries by number of telephone lines in use Turkey, 17th List