-About 8 years ago. If you are living on a underground places. You got the signal of this provider only. But since 2-3 years they decreased their connection reliability. Specially in the rural area. They think providing the good quality of coverage in rural areas is waste of money, They are now giving more priority to the urban areas.
-Customer service is fine. Some of their executives are responsive and some are not. He has to try to make the good customer service.
-Charges of airtel is greater than any other company in the India. They has to decrease their prices. So poor peoples can also buy the packs.