As we know that jio company have the biggest network in our India but the speed of Jio not giving like 4g net speed because the million of user.
That’s why net speed get decreased.and we get 2g internet speed.
If you want to increase the net speed then follow the instructions.
1 Apn setting sometimes are reasons of slow internet speed.so check out the APN settings for your specific state
2 Your phone also responsible for your slow Internet.connection
3 If you want to get high speed Internet then go near the Jio tower and use the real speed of 4G
Because I use 3 option for better internet speed