An antenna is a device that picks up and sends out signals. It is usually found on TVs, radios, or cell phones and helps them receive and transmit information, like radio waves or wireless signals. Full definition
The dual camera setup is horizontal with antenna bands on the top. (suggestphone.com)
Toss in a couple of antenna lines on the top and bottom and a fingerprint sensor dead center of the back, and you've got a fairly generic looking phone. (androidcentral.com)
Is it a new kind of antenna for satellite reception? (patentlymobile.com)