There is some concern that the transmission (a cell phone always transmits) can interfere with in-flight instruments or the operation of the aircraft.
It is also very difficult for a cell phone company to support a cell phone call that is moving several hundred miles an hour. The cell towers cannot transfer the call from tower to tower fast enough to keep connected.
If you mean ' off ' then its because the reception the cell phone receives and transmits may interfere with the planes electronic systems
so that we can easily communicate with others while on the go. If we didn't have cell phones, then we would have to use house phones or payphones.
Passengers are typically allowed to bring cell phones on a plane, but they must be turned off or put in airplane mode during the flight.
Use of cell phones while driving - is it going to be the last call ?
Cell phones have saved people's lives that have been in dangerous situations where they can call for help. Without cell phones the people on the flight that crashed on Sept 11 would not have been able to call their loved ones before they died.
Can you dial *77 on your cell phones that goes directly into State troopers for help while on the roads?
no.....
Over 2,600 die and 330,000 get injuried from using their cell phones while driving a year.
28%
In the 1970s there were no cell phones, but there were mobile radio phones. These were bulky, required going through an operator, and only worked in large cities. The detective Cannon on the TV show of the same name had one in his car.
cell phones
If there are old cell phones lying around the house with no hopes of ever being used again, it might be time to trade the cell phones for cash. Many cell phone companies now offer a rebate for old cell phones. People who buy new cell phones on a regular basis keep their old cell phones just in case. That sometimes becomes more of a burden than a blessing. Old cell phones are purchased and then given to people who do not have enough money to afford a cell phone. That means the original purchaser can help others while selling their old cell phones for cash.