All of us know about the Jio sim and Jio preview offer. Now all of us buy this Jio sim because they give more offer than other network. Also they give to us a new offer that is free caller tune. Do you know how to active it ? if you don't know don't worry we will explain it.How to active Jio callertune/hellotune/dailertune ?Are you a VolTe user then open your message and type here unless then use Jio4GVoice app (if your nonVoLTE users use JioVoice app)Then create a message and type 'JT' and send it to 56789If you need specific song/music/movie song don't worry you can select it.How can i select specific song/music?send like:MOVIE <name of movie> to 56789SINGER <name of singer> to 56789ALBUM <name of album> to 56789After send this message to 56789 you will get reply for your message. Then you can select your choice.After select you will get final message of activation of your caller tune (confirmation message of activation)Now your friends can hear that caller tune when they call you.. Congrats.. This offer for only 30 days only.