When I got Jio SIM card before 2 year that time I was facing too much coverage issue. Outside it was good but when I moved to inside my room after one wall it was very difficult to connect on other number due to network problem. but now a day I can say honestly Joi is one of the best service provide operator in India not only outdoor but indoor as well.
After getting any product customer support play very important role because if you have any problem related to particular product you can directly contact to customer care and getting proper solution on the same time. in this regard Jio is providing very good customer service they are responding very quickly with proper solution.
As we all knows, Charges are very less even now after getting lot of free services. Jio is one of the first operator in India which is providing best service at lowest price.