Unable to use mobile data services as no volte connection, after the system update.

[samridhi_18_agg]

It was working fine before the update and sim is working fine on other mobiles.
I'm using Airtel Sim and have tried all the settings to get it working.
Please help me fix this problem.

[ZT-c4944f1a]

Check your APN settings.......Reset them or Create a new apn

[samridhi_18_agg]

Tried already .... didn't help

[MrHornet]

did you checked: Dual SIM 4G option?

[samridhi_18_agg]

Yes the net connectivity is there for jio but speed is so slow , for Airtel no connection is there.
My device is updated to Android 9 and I have dual SIM volte option available but no connection for Airtel 4g sim .

The Airtel Sim is working fine on other devices.