Thanx to Jio for free data and calling after they put limitation of 1gb many user want to use Jio sim in both slots so they can use 2gb data but they can’t since they are providing only 4g data and 2nd slot automatically becomes 3g . You will not get network in 2nd slit if u want to use both slots then use other cellular network sim like Airtel idea tata Vodafone BSNL etc. It is cons of using reliance Jio