What is "orbot"

Orbot is a free software project to provide anonymity on the Internet for users of the Android operating system. It acts as an instance of the Tor network on such devices and allows traffic routing from a device's web browser, e-mail client, map program, etc., through the Tor network, providing anonymity for the user.

This tool is used to keep the communications of users anonymized and hidden from governments and third parties that might be monitoring their internet traffic.