Finally got one jio demo sim, hope it have lot of benefits
Adv :
No need to recharge.
Daily 1 gb data
DisAdv :
Only calls to jio number or reliance networks, for calling other than jio you need balance in main account i think, when i dialled other number its telling me to recharge first, but calling jio number is hassle free..
still have to ask about dealer for more benefits.
offtopic:
as my dad have mobile recharge shop, got this for free.