Before running out and purchasing a Smartphone, think about what you’ll be using it for. Ultimately, your goal should be to choose the best Smartphone that meets the needs you have right now in your personal and professional life.
Ideally, you also want a device that you will be able to upgrade and/or expand later in order to adapt to changes in your life and new software/technology developments. It’s important to choose a Smartphone not based on its flashy look or the fancy bells and whistles it offers, but based on how it can immediately fulfill your needs. Take another look at the list of functions Smartphones are capable of and determine which of these is truly important to you.

Knowing what you want and need a Smartphone for and developing a better understanding of what the technology actually offers (which is what this book will help you do), will allow you to choose a specific Smartphone device that’s perfect for you. For more information, you can also visit the websites described throughout this book and/or visit a Smartphone retailer to see the various units first hand.

To take advantage of the advanced features the Smartphones available overseas offer (such as Bluetooth compatibility), some U.S.-based users choose to purchase their GSM compatible Smartphone overseas (via the Internet), then purchasing a SIM card and service contract from a U.S.-based service provider for their voice and data service. While you’ll initially pay substantially more for the Smartphone itself, you’ll have a greater choice of U.S.-based service providers you could use for your service, because you can sign up with any provider that supports GSM phones.

Some tips from me, try to choose the best seller smartphone in your local area by gathering alot info and review from forums, blogs, through search engine.  Don’t buy cheap smartphone coz usually its not take a life long.