1st you need have nfc tag...
2nd go to setting, general settings, more, turn on nfc...
3rd go to tools, open ponpon tile(if have, if no,go to mi market download)...
4th touch your phone to the nfc tag, ur phone will vibrate...
then can add & configure the task u want...
try to add the task u want, save it. then u can use it by touch the nfc with phone.
example: i set my wifi and 3g toggle mode, if my phone now is 3g, when i touch it, it will change to wifi and close the 3g, but if my phone is wifi mode, when i touch it, it will close wifi and open 3g...
this is useful for me, to auto switch between 3g and wifi...
ps: you can't use the nfc while the phone screen is off... this is bad

(some siad is security purpose...

)
Great sharing! Will pin it when im free...