Web browsers are applications used primarily to display documents, files and media from the Internet, identified by a Uniform Resource Identifier (URI) that can be a page, image, video or other file. Some browsers require the use of add-ons or extensions to safely render the information they receive; others have systems built into them to perform the same functions.
TRUSTED BY
Find an application that shows what sites applications are connecting to and how much data they are sending both directions. On Windows this would be easy; Microsoft TCP View puts it on one screen (see below). On a phone there is no doubt something equivalent.