Sprint is offering a $100 off any smartphone with a new 2-year service agreement when you transfer an existing phone number for limited time. Shipping is also FREE for limited time. Deal expires May 9, 2013.

Deal is good for popular smartphones like the new Samsung Galaxy S4 ($149.99), HTC One ($99.99), LG Optimus G (FREE), iPhone 5 ($99.99), and many more.