Microchip covers how to use PIC32s with GSM/GPRS/GPS wireless data and navigation systems. It uses their Machine to Machine board with a GSM/GPRS/GPS communication module:
[Machine-to-Machine] uses a device to capture an event, which is then relayed through a network to an application that translates the event into meaningful information. A common application of M2M is fleet management, where vehicle tracking is wirelessly transmitted to a central monitoring office over cellular networks.
There are many popular M2M applications, one of which is a utility meter. One of the major benefits of a M2M-based utility meter over a traditional one, is immediate operational efficiency from reading and programming meters remotely, which eliminates the need to physically visit the meter.