First of all aircel network coverage is worst than other operators. call drop in aircel is very much. I used it only for two months then my pattaince gone and then I close my simcard from a worst experience from aircel sim. In net aircel work very good in nights after twelve at night but in day life it gona be dead you can think that even whatsapp message gone delayed by this sim network.i think aircel did not have enough towers to fullfill their coustomers requirement. Because it is cheap in rates and net packs is also very cheap guys ie. It cuts its expenses in towers and networking.