Only one Jio SIM per 4G Device on Reliance Jio

That probably is done to stop users from opting for multiple sim under 499 or 303 plans.

Data under both these vouchers is cheaper than other add-on packs and higher denomination recharges.
 
So a person can hold multiple Jio Sims but they cannot use more than 1 sim in a same/single phone right?

So it has to be Jio + Other Telecom if we have Dual Sim Phone. Right?
 

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