First time in my life I have used vodafone sim card. It has a bad network or signal. It is almost fail in hilly area like my home town in Manipur. Call rate in North-east circle is good but most important thing is network/ signal coverage. I think vodafone is also in 4G facility. Before upgrding upto 5G, 6 G first vodfon needs to get a survey from the user. How is their signal strength and how far it cover. During night start from 12: 00 am signal got disappear upto 05: 00am in morning. I am unable make any emergency during this time. While complaining to customer care, we talk in a lovely and polite manner but no any action. Finally I would like to suggest vodafon company that before comparing with other company in terms of call rate or speed, first just try to compare the signal strength and coverages.