Showing posts from September, 2015

How to upgrade your old Airtel sim to 4G

Go to
Request for your Free 4G SIM
after you receive the sim you can find 20 digit sim no on the back side of sim packet or sim itself 

send sms to 121 message as followed


you will get a message press 1 send to confirm 

you will get a confirm message ,Now you have to wait until your network goes down  ,after network goes down you can swap with your NEW 4G SIM 

go to settings and change your network to 4g 

Enjoy 4G :)