Market research firm iSuppli’s Teardown Analysis Service has taken apart the iPhone 3G and has issued a preliminary estimate of $174.33 for the cost of materials and manufacturing of the 8GB iPhone 3G, compared to its estimate of $227 for the original 8GB iPhone. iSuppli found several chips from Infineon AG in the phone, including the HSDPA/WCDMA/EDGE baseband chip, an RF transceiver and a GPS solution, along with a Samsung ARM processor,…