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The Smart (Mobile) Phone



We almost went through the anatomy of a mobile phone in the earlier post. To understand mobility applications better, it is important to first understand the infrastructure on which such applications run.


 The smartness of a mobile device is directly related to its hardware and software capabilities. As a simple example, a phone that has an in built data modem (hardware which is similar in functionality to the broadband router most of us have at our home for internet connectivity) is a little more smarter than one that can do only SMS.

Inside A Mobile Device



Mobile phones are categorized by their capabilities. The initial ones provided just voice communication capabilities along with very limited data communication (SMS) capabilities. Mobile phones obviously use wireless radio frequency to enable any communication. The ubiquitous availability of such radio channels combined with the ability of technology to pack more data within those channels have always limited the data communication capabilities of cellphones till date. Fortunately, these two resources continue to evolve.


The difference between a desktop phone and the mobile phone is the simple fact that the mobile phone has a small computer built inside. This is required because cellphones need to be lot more intelligent compared to their tethered desktop counterparts.

Mobile Service Delivery Platform



To deliver mobility applications, we need an SDP . An SDP is a mechanism which



  1. helps configure policies, customizations, service level assurance, security, etc., depending on the stakeholders of the service,

  2. deliver those services appropriately,

  3. help measure service levels, and

  4. facilitate invoicing and collecting money for the services delivered

History Of Wireless Mobility



Not so long ago, almost every two way communication device was tethered to a wall socket. This statement will not apply to those roadside payphones. Nevertheless those phones were also anchored firmly in their position and were connected by a cable to the phone network. One always needed to find and reach a device tethered by an electic cable to the network to be able to make a call.


Only people delivering mission critical functions were using technology that did not need a wire for voice communication and hence had the ability to make contact when they needed it and where they needed it.