Peraonal experience -iam uaing aircel around 2 years and I found it a good network provider. The network strength in my hometown and my locality is good. The beat part of aircel is its cheap data plans and recharges.in terms of data connectivity
The operator provide 2g data plan . the surfing speed with my personal experience is good but download speed is ver less around 9kb/s .to download 5mb it takes 1 hour atleast .
The speed is its drawback. In terms of calling I never face call drop issue and iam bit satisfy with ita calling rates to .many other review it bad opertaor so might b the place or in there home town the connectivity is low.so over an all opnion vary from peraon to person .i personally recommand u to use aircel for calling or text messenging purpose but not for data