As 4G penetration increases in India, Kolkata among all the other cities has emerged as the top city with a 4G availability score of an impressive over 90 percent, London-based wireless coverage mapping company OpenSignal said on Thursday. Kolkata topped the list of 22 telecom circles in the country.

However, the other 21 circles saw 4G (LTE) reach scores over 80 percent, including top circles like Punjab with 89.8 percent, Bihar on 89.2 percent, Madhya Pradesh with 89.1 percent, and Orissa on 89 percent. According to OpenSignal's latest 4G availability metrics, the results reflect the outstanding availability growth in India - quite remarkable for a country which has only had 4G since 2012.