Aircel mobile operator was in much of talk when they introduced there plans and that too with very less tariff rates they attracted customers in huge amount.
when I opted for this service because I also wanted lowest rates so the most important issue I would like to mention is the network problems.Many times I experienced that the network range is very poor.
But I was satisfied with the recharge plans. things went bad when 3G and 4G services were introduced I also decided to switch to another operator.
During number portability as well I faced many issues when I visited aircel chembur gallery.
Since I was a prepaid customer so I cant comment about the postpaid services.