Aircel provide poor network in up east. I use it since two months. I have two months of bad experience. Sometimes when I call I cant hear voice still the call is connected and I i loss of balance.
The network is only in city whenever I go to city outer place and villages then I found no network.
Another thing is sometimes when I open my gmail account there is process of two step veryfication and I recieve message after 20 minutes thats why I recommend you to buy airtel or vodafone if you want to talk without error.
Aircel internet speed is sometimes fast and sometimes slow.