There are services out there that have one purchase a set amount of credit within the service. (Skype and EZ Pass come to mind. Also Many Pre-Paid plans by VZW.) I was wondering how I would go about suggesting that Post-Paid customers could pre-purchase a "pool" of data for their account, for a set incremental amount.
The pool would have various tiers, and could cover both single and multi-line phone accounts. Having this pool would allow customers who would not normally consider data plans to sign up. This feature, as one could imagine, is aimed at would-be smartphone users. It would not be cost effective to consume the pool monthly, but instead should be aimed toward low usage for 90 days, similar to some pre-paid cell phone plans. At this time, a maintenance fee could be applied, as well as the difference calculated to refill the MB allowance up to the contracted amount.