Thanks kimz and I'm still waiting for more contributions. No matter how small it may seem, there's always someone else who did not know about it. Like the next one:
Did you know that u can immediately shut off the ringing tone of the phone by pressing on either one of the volume keys on the side? This will shut off the volume but the phone will continue showing the rinnging and the lights will still work to indicate a call is in progress. This is very usefull when you're in a meeting and you forgot to turn the phone to vibrate mode and a call comes in but you don't want to be rude by cutting it off.
It helps too when you want to lie to your girlfriend that you were in the toilet or something
Believe me, you don't want to be answering her when she demands to know why you cut her off while the phone was ringing
Hope for more tips from you guys. JithinSK promised one but still haven't seen any