The number of people using smart phones has risen dramatically over the last couple of years. There are several reasons for this rapid growth but mostly it comes down to the advantages that smart phones offer, that and brilliant marketing. It will likely not be too far in the future when regular cell phones have been replaced completely by smart phones.
The reason that so many people are choosing to use a smart phone rather than a cell phone is that the smart phone is just so much more capable. There are a lot of things that you can do with a smart phone that just wouldn't be possible otherwise. The most obvious of these is the ability to surf the web. While you can do this to a certain extent with a regular cell phone with a smart phone you will get access to high speed internet which makes it much more convenient.
The other bit reason that people are using smart phones is that allows them a variety of ways to stay in touch. Rather than just having a phone and text messaging you now have access to things like email and text messaging. This means that no matter how people want to get a hold of you they will be able to. Really it was the ability to use email that resulted in the creation of smart phones in the first place so it is no surprise that this is one of the most popular uses.
Perhaps the biggest reason for the huge surge in popularity of smart phones is all of the apps that have been created for them. No longer are you limited to using the apps that the phone maker decided to provide on the phone. Now you can add apps that were developed by third parties which greatly increases the number that are available. With the processing power that a smart phone has there is also a lot more that the apps can do. The result is that you have a phone that will allow you to do a huge variety of things, more than most people will ever need.
When considering why so many people are using smart phones it is also necessary to acknowledge the role that marketing has played. Apple are brilliant marketers and when the iPhone came out they really promoted it heavily. A lot of people bought smart phones because of all the hype even though they had little use for most of the features. In fact most people don't even know how to use the majority of the features on their smart phone. Nevertheless it is the latest and greatest so people are buying them in large numbers and for the most part using them like regular cell phones.