I am using vodafone from last 7-8 years and my family uses it too Because we trust it much then other mobile operators.
Previous year I shifted my room to a less network area. I tried Airtel and jio here first, but there's no signal. My unlimited plan got waste 2 times. I complained to much in Airtel and jio help center but all in waste no improvement.
then I tried The Vodafone, it's amazing , giving the real expected downloading and uploading speed. That's why I gives others suggestions too to use Vodafone.