For $50 you can buy Google's gray skeleton phone that users can build upon with the specs they're most interested in. The lego-style design will allow users to pick everything from the battery, to camera to mainly games if you're a gamer.
Sounds neat but there are drawbacks. "The design could be bulkier and thicker because Apple and others benefit from the tight integration of components. It makes buying a phone harder (because) we like things that are prepackaged," said Mark Spoonauer, editor in chief of Laptop Mag and Tom's Guide.
Earlier this week, privacy was in focus at the Mobile World Congress when Geeksphone came out with what it hopes to be the first NSA-proof phone, called the Blackphone. At $629, the device comes with encrypted hardware that makes it one of the most secure phones out there.
(Read more: Samsung branches out as smartphones reach saturation)
Next up is Boeing's Black phone. The phone is to be sold primarily to government agencies related to defense and homeland security. It's so secure that buyers need to sign a confidentiality agreement upon purchase and should someone attempt to service or replace any part of the phone, it will self-destruct.
—By Christina Medici Scolaro.