According to Pew research center, at least half of all US adults with cell phones have apps, including those with apps that came with their phones.

But did you know that with unlocked cell phones you can delete those preprogrammed apps? That leaves more room on your phone for all those downloaded apps, and it can even make your phone work a bit quicker—so your angry birds can really knock those pigs around.

Indeed, there's apps to help you do your job, calculate tips, or entertain yourself while you wait for the train. With unlocked cell phones you can have it all, more memory, more speed, more apps. And it's easy to get unlocked cell phones, just buy order one online, and it will come working out of the box!

The other reason to unlock your cell phone is that some phones need to be jailbroken, meaning you need to lift the restrictions your carrier, or the manufacturer, put on the phone. Most phone restrictions will re-install apps or factory settings, or may make it harder to use your phone outside of the ways they want (buying from their app store, for instance).

There are plenty of online guides for creating unlocked cell phones, but if you're not careful you can brick your phone and void your warrenty! That's why it's best to buy phones already unlocked.