The most important things to know when shopping for a cell phone.

Cell phones have become the most crucial personal technology purchase you can make. Not only are these devices full-fledged miniature computers in their own right, they're getting smarter with each product generation. If you're looking for a new handset right now, start with theSamsung Galaxy S3 or the iPhone 5. The Galaxy S3 offers all the power you'd expect from a high-end Android device in a gorgeous package. The iPhone 5, meanwhile, continues to set a smartphone standard, and it's the best iPhone you can buy. If you're an Android user who's always on the go and far from power outlets, the Motorola Droid Razr Maxx HD is the longest-lasting handset we've ever used plus flaunts a distinctive design. For more top cell picks, check out CNET's list of our favorite phones.

Still undecided or need a little more guidance? Well, if that's you, then read on for CNET's expert advice on how to buy the nest cell phone for you.