They very possibly can do all of the above.<p>However you have to understand how a lot of the cellular operators function. They don&#x27;t build much of the systems in house, but buy from large companies like Ericsson, Huawei and so forth. Therefore all their functionality is controlled by those companies.<p>That being said, the cellular operators don&#x27;t like to hand out contact information about their customers. All billing is normally done via a MSISDN to a single system that stores a customers credit, and records all billing information. It does not contain any customer details.<p>I have actually seen a different approach, wherein any messages going to a MSISDN that has been identified as a tablet or modem &#x2F; dongle, will be redirected to another MSISDN as a SMS or an email address, depending on the customers preferences. All these details were stored in another database.