The current craze in terms of mobile phones has to be that surrounding the new smartphone, a new breed of handset that offers much more than the standard mobile, but as a business user you will need to work out whether they have more to offer for you than a standard package.
There are many different mobile smartphones on the market, and while some are geared very much towards the entertainment sector by offering fantastic visual and audio performance, others are very much aimed at the business user: the legendary Blackberry models, handsets that pioneered the use of real time email while on the move, remain the guiding force in terms of mobile smartphones for the business user and are very impressive and extremely useful tools indeed.
Given that you will need email and most likely internet access, plus the ability to read documents while on the move, and also want quick dialing to your office colleagues, it is clear that the new breed of mobile smartphones has much to offer the commercial user; shopping around for the best deal is, as with any purchase, the best way of ensuring your get the model and package that gives you what you want.