Plus Back Cover for Apple iPhone 4 / Apple iPhone 4S (Silicone | Transparent) : Amazon.in: Electronics
Spigen Back Cover for Apple iPhone 4S, Apple iPhone 4 - Spigen : Flipkart.com
Amazon.com: Cadorabo Case Compatible with Apple iPhone 4 / iPhone 4S in Metallic RED - Shockproof and Scratch Resistant TPU Silicone Cover - Ultra Slim Protective Gel Shell Bumper Back Skin :
How to replace the back cover of an iPhone 4 or iPhone 4s | iMore
IFixit's See-Through Rear Panel for iPhone 4 | WIRED
Phone Case for iPhone 4 4S Rugged Rubber Matte Hard Silicone Case Cover Shockproof Protective Phone Cases for iPhone 4 4S - AliExpress
iPhone 4 Back Glass Cover Replacement - Black
iPhone 4 Back Cover (Black)
Amazon.com: GINOVO® Clear Transparent Glass Replacement Back Cover housing Battery Door Compatible for iPhone 4S, (unfit GSM AT&T iPhone 4) (Transformers Black Decepticons) : Cell Phones & Accessories