If you "study" people like I tend to do, you've probably noticed some very interesting behavior on the part of most individuals when ever their cell phone goes off.
Their first reaction is one of surprise, as though this has never happened to them before. Their next reaction is to retrieve the device and look at it in total amazement. Last, but not least, they are compelled to answer the call no matter what they're doing or where they are.
Cellular technology is certainly cool, but when did it start possessing the power to control our lives?
As a professional sales person, your cellular device should be a tool, not something you're a slave to.
Nothing says "Your not that important to me" more than answering your cell phone while you're engaged in a conversation with someone else.
Your client's deserve your full attention, and 99.9% of the time there is no call that is so important that it can't wait until your time with that client is over.
Unless you're in charge of protecting the rest of us from certain catastrophe, remember to use all of your cell phone's features. The off button is one of them.
If you think that getting all those calls shows just how important you are, you need to re-think what you're actually demonstrating.
To many it shows that you're full of yourself, don't know how to prioritize and that you're a real nincompoop when it comes to social graces.