Business

How 5G disappointed 'pretty much everybody'

Driverless cars, fridges that talk to toasters, breathtaking immersive reality, mind-blowing gaming experiences –- 5G was going to enable it all, and telecom companies were going to make a packet.

Telecom

Deep neural networks are coming to your phone

How does a self-driving car tell a person apart from a traffic cone? How does Spotify choose songs for my "Discover Weekly" playlist? Why is Gmail's spam filter so effective?

Internet

US tech titans look to ditch passwords

Apple, Google and Microsoft said Thursday they are looking to get rid of passwords and replace them with a more secure way to access accounts or devices.

Computer Sciences

Emotion recognition has a privacy problem—here's how to fix it

With devices listening everywhere you go, privacy concerns are endemic to advancing technology. Especially sensitive are different techniques powered by audio from your smartphones and speakers, putting consumers in a constant ...

Telecom

A navigation system with 10 centimeter accuracy

Researchers of Delft University of Technology, Vrije Universiteit Amsterdam and VSL have developed an alternative positioning system that is more robust and accurate than GPS, especially in urban settings. The working prototype ...

page 6 from 40

Mobile phone

A mobile phone or mobile (also called cellphone and handphone, as well as cell phone, wireless phone, cellular phone, cell, cellular telephone, mobile telephone or cell telephone) is a long-range, electronic device used for mobile voice or data communication over a network of specialized base stations known as cell sites. In addition to the standard voice function of a mobile phone, telephone, current mobile phones may support many additional services, and accessories, such as SMS for text messaging, email, packet switching for access to the Internet, gaming, Bluetooth, infrared, camera with video recorder and MMS for sending and receiving photos and video, MP3 player, radio and GPS. Most current mobile phones connect to a cellular network consisting of switching points and base stations (cell sites) owned by a mobile network operator (the exception is satellite phones, which are mobile but not cellular).

As opposed to a radio telephone, a mobile phone offers full duplex communication, automatised calling to and paging from a public switched telephone network (PSTN), handoff (am. English) or handover (European term) during a phone call when the user moves from one cell (base station coverage area) to another. A mobile phone offers wide area service, and should not be confused with a cordless telephone, which also is a wireless phone, but only offer telephony service within a limited range, e.g. within a home or an office, through a fixed line and a base station owned by the subscriber.

The International Telecommunication Union estimated that mobile cellular subscriptions worldwide would reach approximately 4.1 billion by the end of 2008. Mobile phones have gained increased importance in the sector of Information and communication technologies for development in the 2000s and have effectively started to reach the bottom of the economic pyramid.

This text uses material from Wikipedia, licensed under CC BY-SA