One of the key things that differentiates mobile phones from any other device is their ability to deliver a constant stream of real time data coupled with the processing capability to help consumers make a wealth of decisions based on this information. Tablets — we're going to leave home without them, and the majority of connections are over Wi-Fi. Wearable technology collects real-time information and may have applications/display, but we aren't yet seeing devices with the same flexibilty as the phone. The highly anticipated Pebble may yet be the device, but for today, it is the phone. (My colleague Sarah Rotman Epps writes a lot on these devices — see the rest of her research for more information).
With that fact established, my open question is, "Who is making my life better with this ability to process information near instantaneously to help me live a better, healthier life . . . or at least how I choose to define it?" I think the key to measuring mobile success must lie here — from the perspective of the consumer first before mobile will deliver huge returns in the form of revenue or lower operating costs.