One WiMAX subscriber, multiple devices: The true disruptive power of mobile WiMAX may be to break the one-subscriber, one-ARPU, one-device rule

Most communications services are currently tied to one contract and one device. For instance, a GSM mobile subscriber has a pre- or post-paid account that is typically associated with a SIM card and it is the SIM card that, when inserted into a particular device, designates that device as being live on the account. The subscriber can use a different phone by moving the SIM card, but only one phone can be used for communication at any one time. Even bundled services respect this rule: they offer a discount on the overall bill, but mostly treat devices and services as independent products.