The first and foremost reason to get a Sony Xperia Play is because you need a phone for staying in touch with others. Now, if you purchase certain accessories such as a microphone, you can indeed use the iPod Touch as a phone provided you connect to a service such as Skype. Now, if you're looking for a device that was designed to be a phone in the first place without having all those features added as merely an afterthought, then you might just want to choose the device that was made to be a phone: Sony Xperia Play.
When it comes to entertainment, however, the choices are a bit more diffuse. For example, if you are interested in listening to music, it is true that you can accomplish this task on all three devices, but the device that is likely to be the best is the iPod Touch, as here you will get the most memory for storing music for your money, and it is going to come with the necessary software to help you play and enjoy that music. You are most likely going to be getting a similar experience with the Sony Xperia Play, plus it offers various other applications that have to do with other mediums of entertainment. The same goes with the 3DS.
There are several similarities and differences to possibly consider when deciding to purchase devices like iPod Touch, Nintendo 3DS and the Xperia Play. The system that is best for you will clearly depend on your needs, as well as on what you can afford to live without and what you absolutely must have in a package. If you decide to pursue the smart phone route, however, you will want to look into some of the many accessories that are available for purchase.
Common examples include the charger, the battery, and the holster. An extra battery will give you more energy to do your music listening, gaming and more.
The charger is good for giving you the power to keep on going and start the fun all over again when the batteries are drained. Finally, the holster is wonderful for helping you keep your phone close to you as you go about your day placing calls, watching videos, and browsing the internet.