How to activate airtel 4G sim simply....?

Hi guys,
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•hello guy first touch here!!for tecky update!!
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---#U Can setup eazly with 3 simple steps....!
•this video is quick set-up of Airtel 4G sim.
And this shows you that Activation of sim card(or) Upgrade to 4G sim...!
•And process°
•∆•step(1)-Take new sim card imean 4G card turn back and you can see on code of 20digits[o®]20numbers.
•∆•step(2)-go to SMS in your mobile phone then SMS to 121 as SIM'SPACE' and enter 20ditig number which is on new sim card..!
•∆•step(3)-then send SMS to 121 and you get some reply form Airtel coustmer care as activating(update) your new sim
•But you won't get any SMS from your Airtel serive for Next 24hours(1day)!!
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