Hi friends I am using the jio sim from last one month. Network coverage not bad also and customer service is awesome I have experianced it.Charges of this sim nathing till 30 dec thats why I get this sim but now I am a big fan of Jio because of the Internet speed. Jio internet speed is lightning fast. 1 GB movie download in 10 to 20 minutes. Jio app is very useful to all who use internet. I really like all the app Jio is provide to the customer. I really like Jio on demand and Jio drive. so forgot other sim and get Jio this is my personal opinion. Thank you.