This is a product of reliance named Jio. It gave u 4g net and unlimited voice calling and video calling services. And u thought about its speed. Bro speed is depend upon area, in one area only one company internet is at top speed and in mostly areas reliance gives very good speed at very low cost. But their is problem here that we can’t connect call to other we have try to call atleast two to three times but overall it is good. And it is available for free if u have 4g smartphone.
If u want it for free go to play store download my jio app generate bar code print it out and take it with i’d proof and address proof and submit it to nearest reliance store.