You no longer need to switch off your mobiles before your flight takes off. Instead, you will only need to put it on flight mode. This has become possible with the Director General of Civil Aviation yesterday, amending the rule which bans use of portable electronic devices and allowing their usage in all phases of flight, but on a non-transmitting or flight mode.Official sources said, with the implementation of the new rule or Civil Aviation Requirement, flyers can now turn on their cellphones, tablets or laptops on flight mode to work, play video games, listen to music, watch pre-loaded movies or type their emails.