About Samsung Convoy 3 SCH-U680 Rugged 3G Cell Phone
An unlocked phone allows you to choose your phone first and your carrier second. If you decide you want to change carriers down the road, it's as simple as replacing your existing sim card with a new sim and activating your new plan. Travel: Take your mobile internationally and use the carrier of your choice. It's easy as inserting an active sim. Choose the company with the best service or price. If you find an easier deal later, you can switch carriers. Get more service options with no contract.