HP Notebook - 15-f162dx (ENERGY STAR) Get the features you need and the reliability you expect with this value-packed HP Notebook. Enjoy your favorite photos or videos with the stunning HD display and easily take it on the road with a thin design combined with security features to protect your data. See it clearly with HD.
Telecommunications is a general term for a vast array of technologies that send information over distances. Mobile phones, land lines, satellite phones and voice over Internet protocol (VoIP) are all telephony technologies -- just one field of telecommunications. Radio, television and networks are a few more examples of telecommunication.
AT&T is the largest telecommunications company in the world by revenue. As of 2017, it is also the 18th-largest mobile telecom operator in the world, with 135 million mobile customers. AT&T was ranked at #4 on the 2017 rankings of the world's most valuable brands published by Brand Finance.