Bro tried everything I can, even replaced all the files from the rom in which the VOLTE is working even with the stock miui rom
But the nougat version of miuipro by orochi, volte didn't worked even whatever I do.. I think this is the rom problem, coz with other version of orochi ports , volte worked,
But in this miuipro no method worked.
Trying more if I can do something else, but I am sure this is rom issue
Thanx bro for ur efforts...I'll wait for new miuipro nougat update