The problem is probably with Jio 4G and not with Samsung.

As observed, Vodafone Airtel or Airtel and Idea 4G SIMs work perfectly fine with dual SIM. Reliance Jio won't remain active if mobile data is taken from another SIM card on the device. You **must** access internet services from Jio 4G to keep it enabled.

If you want to use both of your SIM cards, then place JIO4G on SIM1 and Airtel on SIM2.