One way that Sprint and T-Mobile are helping make the MVNO business a success is by enabling many of the back office functions that the MVNOs of the mid-2000s had to do on their own. For example, Chartier said that T-Mobile offers a couple of different options: For traditional MVNOs, the company will provide just network access and the MVNO will handle the billing and logistics. For partner brands, which Chartier compares to a brand licensing arrangement, T-Mobile offers reverse logistics, carrier billing, marketing support and even distribution.

via Sprint, T-Mobile execs explain the MVNO explosion – FierceWireless.