The Samsung Galaxy Prevail has the standard set of features found on most smartphones, though it does lack slightly when it comes to the camera. Coming in at 2 megapixels, it's a slight disappointment. Also, the lack of flash is another disappointment and it's strange that Samsung hasn't learned its lesson from the Samsung Galaxy S 4G, the Samsung Vibrant and the Samsung Captivate. Without flash, the camera really becomes a weak feature on a smartphone, even on an entry level smartphone.
The 2 megapixel camera itself takes decent pictures, though one must note that many flip phones nowadays have 2 megapixel cameras. It would've been a bit more enticing if the camera was just slightly better. Not an 8 megapixel camera like on the LG Optimus 2X or even a 5 megapixel like those found on its older siblings, but a 3 or 4 megapixel camera would've been ever so slightly better.
Beyond that, the Samsung Galaxy Prevail gets access to the Android Market, giving it free reign to surf through 100,000+ different applications, both paid and free. Recently, Amazon released an AppStore of their own, increasing the availability of applications even further. For an entry level smartphone, this type of access and customizability is a huge help in garnering success, especially on a carrier like Boost Mobile.