The lines carry all the power corded phones need to function, and phone companies have massive battery banks and generators to back them up.
There's also a "Nearby" function that taps into your phone's GPS for moments captured in your immediate vicinity.
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Since they look and function more like a traditional phone service, line-powered voice-access systems may be more palatable to consumers than other VoIP products.
It also offers video recording of 720p at 60fps and VGA resolution images at 120fps for slow motion playback function all on a mobile phone.
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If it is high, the system could automatically engage a "Do Not Disturb" function for the driver's phone.
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So why pay more for a function you can get free on your phone?
The expectation the S4 will feature eye-tracking capability has been heightened by existing technology in the Galaxy S3 - the phone's Smart Stay function stops the screen from dimming when somebody is looking at it.
All three function exactly as advertised -- put the phone on top and it starts charging right away.
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This make life easier, with that HD-out feature a no-brainer to access, Sony's created a TV launcher that springs to life when connected to HDMI and is navigable via mapped function buttons on your remote control or the phone's own display.
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On the Juke, for instance, a click on the phone's scroll wheel brings up a text messaging screen, a calendar or a picture function, just as if a finger were pressing the keys of the real phone.
"You need the ball lens to help with the magnification - but any mobile phone with a decent camera and a zoom function will be sufficient, " he explained.
For the first time ever, Kyocera has implemented its proprietary voice-activated command feature into the DIGNO S, allowing the user to speak to the phone to activate e-mail, phone and other commonly used applications - a function accessible by simply tapping an icon on the lock screen.
She also began trialling the mobile phone technology, which comes attached to a lung function monitor.
And University of Washington researchers are testing a way to measure lung function in people with asthma or emphysema as they blow onto the phone and it captures the sound.
Smart design begins with a new, holistic design system that informs every aspect of the phone, from its visually appealing layout and motion to its function and hardware integration.
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You actually don't have to stay away from your phone altogether -- you can just turn the e-mail function off (or Facebook or whatever you're habitually checking).
Using the same accelerometers, a new calling function will dial whoever's contact details you have displayed when you raise the phone to your ear.
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Parking Minder: If the driver happens to forget where they parked the car, the Parking Minder function helps find it by sending the location of the vehicle to the driver's phone.
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While it stands up to rainfall, spillages and the obligatory throw-the-phone-into-a-bowl-of-water test, the device won't function underwater.
Before departure, he said, find out whether your phone will work at your destination, and if so, whether you can activate the international roaming access function that would allow you to receive and make calls.
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