The Samsung Jack or Samsung SGH-i637 is a smartphone available through AT&T in the United States. It is the successor to the Samsung BlackJack II. The phone comes in metallic gray.
Made by Samsung, this mobile phone uses the Windows Mobile 6.1 operating system.
It is the successor of the Samsung SGH-i617 .
If you are looking to upgrade your phone because it is boring or doesn't have all of the features you would like, consider these five things to look for when buying a new cell phone to help you decide which phone is best for you.
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