To avoid disruption in sleep, bed-time mode 'needs

Using these devices is good in the day but at night they use is deadly

Britain's leading physician Professor Paul says gryngrz smart phones and tablets in the car, bed-time mode, so they should be users not to disrupt sleep.

Professor Paul gryngrz say that there should be a blue-light filter because people sleep late at night.

He says that phone and tablets before each new model has a more blue-rays and is bright.

Asia in the smart phone 'addiction'

Professor Paul gryngrz understand their responsibility to develop these products must demonstrate.

He causes the night to sleep hormones in the body, which seems to emit mylatunn person feel sleepy, but mobile phones and tablet screens out certain colors of light wavelengths sleep system may interfere.

Professor Paul gryngrz light emanating from these devices yanked on the research team's findings over the large and bright blue light that comes from devices.

Professor Paul gryngrz told the BBC that it is good to use these devices in the day but at night they use is deadly.

They say that if you use the phone and tablet, etc., you would see that you would sleep late.

They sleep a few apps that have already been developed whose purpose is to prevent the emission of blue and green light.