Much of the information they offer is already available online, on the radio and on cell phone displays.
Others wonder whether Nokia will ever make much money on cell phone maps.
But the CTIA-The Wireless Association didn't take a position on the NTSB's recommended ban on cell phone conversations behind the wheel.
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And the new research joins numerous previous studies on cell phone radiation that have been unable to definitively prove or disprove cell phones' safety.
Previous Interphone research on cell phone users' ability to recall how many hours they spend on the phone has found that heavy users generally underestimate that time, and light users overestimate it, Morgan said.
While distracted driving has been a major thrust of research in recent years, there has been relatively little examination of the effect that talking on a cell phone has on walking, Neider says.
Volkow says that since she began working with the National Institutes of Health researching the impact of cell phone radiation, she always uses a wired earpiece when talking on her cell phone.
Becca Mishkin, a resident of the Upper West Side in Manhattan, doesn't have a regular landline phone, so she relied on her cell phone to keep in touch with family.
Ask attendees who are not dialing in on a cell phone to place their cell phones on mute and keep them away from the telephone, as this can cause a loud buzzing noise.
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Among Americans who read e-books, those under 30 are more likely to read them on a cell phone, at 41 percent, or on a computer (55 percent) than on an e-book reader (23 percent) or tablet (16 percent).
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Another unnecessary cost: employees who call a company-paid 800 number to retrieve voice mail from their desktop phone instead of using free long distance on a cell phone.
But minutes after a visitor arrives at his field, he receives a call on his cell phone asking him if a raid was being carried out on his farm.
There are certain activities that may be more dangerous than talking on a cell phone.
As soon as she pressed the End button on her cell phone it rang again.
Forget about wearing out your thumbs tapping those tiny keys on your cell phone.
And lie sprawled on the sofa talking on her cell phone as much as she wanted.
That morning, he was talking on his cell phone to Governor Jon Huntsman, Jr.
In the apartment, Joanna came ambling out of her room, talking on her cell phone.
Stephanie refused to go -- instead, actually, with her other hand, called 911 on her cell phone.
Rigby's death has attracted worldwide attention because the slaying scene was captured on a cell phone camera.
But none of them yet will allow you to actually use the iPhone on another cell phone network.
The man in front of her swung his head back and forth as he talked on his cell phone.
Now she was on her cell phone calling IAD to get flight information.
But on a cell phone with bad reception, users must often repeat themselves.
In fact, there is an SMS (Short Messaging Service) service that will automatically send you alerts on your cell phone.
On a trip to Germany, Galli got a call on his cell phone from a recruiter pitching the Newell job.
But sitting in the front seat was a frumpy, middle-aged woman, wearing a Wisconsin sweatshirt, talking on her cell phone.
Gilles got a call on his cell phone and had to dash off to greet a new batch of arrivals.
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