That's not what
@billubakra is asking & I am discussing.
The query in this thread is: can 2 4g sims in a dual sim mobile receive two 4g networks at same time?And answer is No.If one sim is receiving 4g network(whether in sim slot 1 or sim slot 2 then other sim can not receive 4g network.)
4g will work in both the SIMS with 2 Jio sims but only one sim can be used for data/voice where the alternative sim is standby.
Your reply make it seems like if there are 2 jio 4g sims in moto g5 then both will receive 4g but only one can be used at a time which is not correct.Whichever sim is inserted first will automatically register on reliance 4g network as jio sims can only use 4g VOLTE network.Now 2nd sim after install will not work at all because once 4g network is activated on one sim the other sim can only receive 2g(or 3g in some mobiles) which will not work for a jio sim so the 2nd jio sim is basically useless with no network unless you disable the other jio sim in phone settings in which case the 1st jio sim will become useless with no network.
The point of dual standby is that both sims at least have network access all the time & whenever one sim is busy only then the other sim will not work.It doesn't mean disabling/re-enabling/rebooting phone to just get network for a sim.