According to Allcitycodes, Sao Tome and Principe is a small island nation located in the Gulf of Guinea, off the west coast of Africa. It is comprised of two main islands, Sao Tome and Principe, as well as several smaller islands. The total land area of Sao Tome and Principe is 964 km2 and its population is estimated to be 193,378 people. The terrain consists of a rugged interior with coastal plains and volcanic mountains reaching up to 2,024 meters (6,640 ft) above sea level. The area code for Sao Tome and Principe is +239. This code is used when dialing from outside Sao Tome and Principe to any other phone number within it. Additionally, to call a cell phone or landline inside Sao Tome and Principe from another country you must dial 00 + 239 + telephone number. All numbers are seven digits long starting with three numbers followed by four numbers (e.g xxx-xxxx). Sao Tome and Principe also has mobile networks which are operated by Unitel/T+/Movitel which use GSM networks with 3G/4G coverage available on all networks. To call a mobile device within Sao Tome and Principe you must dial 00+239+ mobile network prefix + telephone number where the mobile network prefixes are either 7 or 8 depending on whether you are calling a Unitel or T+ device respectively for Unitel/T+, or 6 depending on whether you are calling a Movitel device respectively for Movitel. Check politicsezine for Sao Tome and Principe Political System.