The subject plan can be activated by *567*16#.They say it is valid for a day and is auto renewed. Does it mean that the plan is available for 24 hours after one activates it until deactivation?No it is not.What i have observed is those data used after 12 mid night was being charged. Has any one experienced the same? Also, it appears that this plan gets auto renewed around 8:30 AM every day (irrespective of what time you activated the plan). So between 12 Mid night to 8:30 AM ET, data charges applicable and is not covered by the plan. Customer care confirms this is the case. I dont understand why they have a concept of auto renewal here? Above comments are not based on single instance. I have noticed multiple instances of above issue.This plan is convenient for me as i activate it to check an email if needed or when i travel just for emails and sometimes IMs. For emails this 10MB is perfectly enough to view and respond.PS: I was wasting Rs98 every month on the 2GB plan for 30 days when this Rs 1 plan takes care of my need.