It looks like Aircel, which used an Unlimited Pocket Internet plan for Rs.98 before, has just followed other carriers by capping the data usage. For Rs.98 per month (30 days), your data usage is no longer Unlimited but limited to 3GB.
But, there’s still an Unlimited Plan, albeit for a higher price (or lesser, as you see it), at Rs.251 with a validity of 90 days. So if you are a regular user of Aircel pocket internet, Rs.251 for 90 days is clearly better Rs.98 for 30 days; it’s just that you are paying 2 months advance (and getting some discount in return).
In Rs.251 plan, apart from getting Unlimited 2G Data for 90 days, you will also be eligible for 150 local Aircel to Aircel minutes, valid for 90 days; not a bad deal at all.
The above two plans (Rs.98 and Rs.251) are applicable for both prepaid and post paid subscribers.
For Prepaid subscribers, the small PI packs such as Rs.29 for 750 MB with 7 days validity, Rs.14 for 250MB with 5 days validity still exist.
Without any of these plans, the default GPRS browsing rate remains at 10p/10KB
To get settings for Pocket Internet, send an SMS as PI to 121.
At this stage, for monthly data plans, Tata Docomo Unlimited mobile internet plan looks to be the best deal.