I used reliance jio sim. Its amazing speed with 30 mbps that i see. I download a movie in just 45 minute. Awesome. And it gives us free call and sms all india. Its start sson reacharges for customers. Reliance 4g is better than other operators, friends i suggest to use this sim. For better net speed. Its also have smartphone reliance lyf with his jion4g sim. Smartphone is also a good in low and high range. Thanku my regards