Jio is a brand of mukesh ambani. Louched in 4g. I am using this data service is very fast and forgot for recharge till 31 march 2017. You may call direct by a volte mobile handset. For other phone you want to download jio 4g voice application. Than after u can call to any where in india. So I sugges to this one use this and forget will till march 2016
