After Vodafone and Tata Docomo its now the turn of Airtel to introduce new  prepaid Blackberry plans. Airtel Blackberry tariffs are offered under two categories i.e Blackberry Personal Mail and Blackberry Internet services and one weekly and monthly option has been added under each category. Blackberry Internet services has a new weekly plan of Rs 100 which will allow customers unlimited mails (POP/IMAP), instant messaging and internet browsing. Same benefits can be availed for  Rs 399 for 30 days validity. Blackberry Personal Mail has added a new prepaid  weekly plan of Rs 80 which will allow customers unlimited emails (POP/IMAP) and instant messaging and for 30 day validity same benefits will cost Rs 299. Internet browsing is restricted in Blackberry Personal mail plans.