It’s a great sim. If you want the real 4G so buy it.It gives me 3mb per second and free call.But it was having a problem of call dropping but now it’s Okk and very fast. But it’s a real 4G and doesn’t works on 3G or 3G phones. After buying it you need to install all the apps which are present in ’my jio’ app. You need to free up your internal memory, then only you will enjoy your jio sim. There is two sides for everything good side and bad side. Jio SIM is also having good side and bad side. The bad side is less in jio sim. So if you want to enjoy real 4G so I will recommend to buy a Jio SIM. Now it’s bell almost a year I am using free service but in middle I only recharged of 303. It’s a great SIM. I will definitely recommend to buy it.