iPhone 3GS Battery Replacement | Eli Duke | Flickr
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Apple iPhone 3GS 16GB Back cover housing +Small Parts + battery + repair tools | eBay
1900mah Solar Mobile Phone External Battery for iPhone 3GS, iPod (APC-M400GS) - China Iphone Accessories and Ipod External Battery price | Made-in-China.com
iPhone 3GS Overheating due to running at 100% when in standby.