Atal is very good company. Great network in whole India starting but in the same field its failed due to customer care because many time I call 121 customer care I complete many talk but talk talk customer care. Airtel service is very good. Now I use Airtel 4G. Downloading speed superb but many time download speed down slow but good. Data pack cost very high but they best internet speed. Airtel is the best mobile operater for me.