Just because a dedicated extension doesn’t exist doesn’t mean you cannot map your Facebook friends on Android. Here are four working methods—ranging from manual to semi-automated.

Chrome extensions are designed for desktop browsers. While Android phones can use Chrome, the mobile version of the Chrome browser . This is a fundamental limitation of the Android operating system’s browser architecture. You cannot simply install a .crx file (the file format for Chrome extensions) onto an Android phone and expect it to run.