Can You Use A Cellphone In Flight?

You can not use your cell phone during a flight. This is prohibited by the FCC and applies to all commercial carriers of the world. The reason for this ban is safety as the frequency of cell phones can interfere with the instruments on the aircraft. However, you can use the on board cell phone that are provided by some carriers on the payment of a certain fee.

Gosh dear...it's a no-no! Flight instruments can be affected by your mobile phone frequencies and can cause error in the Pilot's reading.
Please... Don't even think about it!