I’ve used RJio SIM. So I know its many defects. The SIM calling network service speed of the Internet is also very poor. The Internet network does not good everywhere. And sometimes not even at all. RJio SIM phone also does not rush. And do not even think the mobile phone SIM card to everyone, it’s just putting in 4G phone is used. If jio will not improve their network they are going to be in a big loss. The customer care is more good JAT. Bad service I have come to the disturbing use of the SIM is locked.