Probably mobo issue.

It is futile to ask for any feature. Because they deliberately do this to annoy people and move them to buy a costlier product.

Hmm... I have also faced similar kind of problem with VI on my previous phone (Nokia). But the current Samsung one works perfectly. But my friend who uses a Redmi phone also faces problem with VI... Maybe some compatibility issue? Idk man.

Was it a Vodafone sim or an idea sim?(before the vi merger)