The iPhone can access the Internet as well, either using a cellular network or over Wi-Fi. Like an iPod, it plays music and videos that have been downloaded from the Internet directly, or which have been put on it by connecting it to a personal computer, which is called syncing. It also has a calendar and 1, 2 or 3 built-in cameras. A user can make it do many other things, such as run video games, by downloading apps from the App Store.