Another (Money-Saving) Reason To Buy Unlocked Cell Phones
A new study by the Illinois group the Citizens Utility Board has found that the majority of consumers used cell phones less then they planned for–wasting hours of unused minutes a month and hundreds of dollars a year.
One alternative for people who want to save that money is to find a plan (pre-paid or otherwise) that will more precisely meet their needs, and unlocked cell phones are a great way to help accomplish that.
Unlocked cell phones allow you to move between GSM networks without the hassle (and expense, and fees) of buying a new cell phone for each provider. Often, providers will entice you to commit to a contract by offering a free or reduced priced cell phone, but, as the study indicates, committing to a contract may not be ideal for many people, as their needs may change (if the contract ever accurately reflected them).
What’s more, many phones which are unique to certain carriers (the iPhone, for instance) can then be brought to the carrier of your choice. They’re often also cheaper, since they come either as used or refurbished cell phones. Unlocked cell phones offer a world of possibility.

I’ve bought a few unlocked cell phones and I love it but be careful where you get them from because sometimes they can have issues.
http://www.cellulartrendz.com tests all their unlocked cell phones, and they come with a guarantee. You should check out all the phones they just got in.