Plan Entitlements (including data) are assigned on a prorated basis for the first bill cycle. From the next bill cycle onwards, you will get the benefits for the complete bill cycle. E.g., if you have taken the connection on the 15th of the month for a plan which is given 2x GB data per month and the bill cycle is the 1st of every month, then the first bill will be generated for 15 days only and you will get x GB data for 15 days.