Title says it all. This requires no contract and no sign up, just buy it.
Remember though the 520 is the AT&T version, however it can easily be unlocked to use on T-Mobile. I've done it.
Link to article: http://www.bestbuy.com/site/at-t-go...lack/1558441.p?id=1219055522200&skuId=1558441
Note: The 520 supports an external SD card and as of 8.1, you can store apps, music, video on the card, leaving free space on your phone. Enjoy.
Remember though the 520 is the AT&T version, however it can easily be unlocked to use on T-Mobile. I've done it.
Link to article: http://www.bestbuy.com/site/at-t-go...lack/1558441.p?id=1219055522200&skuId=1558441
Note: The 520 supports an external SD card and as of 8.1, you can store apps, music, video on the card, leaving free space on your phone. Enjoy.