SGP iPhone 4 Option Frame for Linear Series [Tender Blue] This Product can not be used on it's own, it must be used along with the SGP Case Linear Series for iPhone 4 & iPhone 4 CDMA Fully compatible with GSM (AT&T) / CDMA (VERIZON) iPhone 4. Snap-On Style, Composed of 2 separate pieces : upper frame, Lower frame (*Back cover not included)