[header] How to choose a smartphone [title] Learn some basic differences between operating systems. [substeps] Iphone (aka ios) is known for its ease of use, security, and clean integration with other apple products. Android is associated with its integration of google services, its ability to be customized, and a lower cost. 
Windows phones are less common, but emphasize integration with microsoft products and offer high end camera software on certain models. If you can, try demoing a device at a store.