I am using Jio 4g sim for last 2 months.
First month I got some call connecting issues only. but not internet access.
Internet 4g speed very great for first 15 days after I got less speed.
Second month I am easy to connect other service providers very easily except BSNL service provider.
Now I am getting high speed net and no calling issues with other service providers.
Iam happy to say that Jio 4g users that Jio is extending anther 3 months till March 31, 2017.
4g signal is also every where even small villages also this is also great news.