Dude i know its just a safety precaution. But still the airplane crew doesn't usually want to take a chance were the the plane's onboard navigation systems is affected in the very slightest bit, the whole thing is dubious but people are like that.
But thats not the point i was trying to pass in my previous post. Here its in the mindset of most people that using mobile during flight is dangerous.
And i was talking with some experience there. A few years back when i flew to cochin, a guy was caught playing a gameboy advance which is a farcry from a mobile. The air hostess clearly mentioned before take off that all electronic devices should be switched off during flight. The dude probably got bored or desperate or whatever enough to take it out and was playing it silently. Apparently one of the passengers noticed it and alerted the crew. His gba was confiscated and after landing he was taken in by the airport security for questioning. I didn't stick around to find out what happened to him, most probably he would have been let off after a stern warning.
Now this is what i was talking about. He didn't do anything technically wrong, the airplane didn't explode lol but still he had to face unnecessary headaches. Now in my books it was not worth it, your mileage may vary.
Anyway these are my thoughts. Has kept me out of trouble till now. You are not obliged to take my advice.
I am just painting out an aftermath that "might" happen. Don't be paranoid, just smart.
But if u really feel the need, use a mobile, laptop etc. and knock yourself out. I am happy just reading a magazine and following the rules as close as possible without getting hurt