The folks at iFixit have been known to spend money on new devices only to break them down gently piece by piece to let us know the real technology and hardware that drives a device.

iFixit has already disassembled several previous iPhone versions, and this time they have disassembled the iPhone 4 too. Based on the tear down, here are some of the components which are being used in iPhone 4.

• 3.7V 1420 mAh Li-Polymer battery which allows for up to 7 hours of talk time on 3G or up to 14 hours on 2G
• iPhone 4 has a whopping 512 MB!
• A rear-facing 5 MP camera with 720p video at 30 FPS, tap to focus feature, and LED flash.
• Apple has integrated the UMTS, GSM, GPS, Wi-Fi, and Bluetooth antennas into the stainless steel inner frame.
• A4 processor 1 GHz ARM Cortex A8 core, manufactured by Samsung.
• AGD1 the new 3 axis gyroscope
• Skyworks SKY77542 TxRx iPACâ„¢ FEM for Dual-Band GSM/GPRS: 880915 MHz and 17101785 MHz bands.
• Samsung K9PFG08 flash memory
• Texas Instruments 343S0499 Touch Screen Controller
• Wi-Fi, Bluetooth, and GPS are all provided by Broadcom
• The front glass panel of the iPhone is constructed of Corning Gorilla Glass

Phew, there are lot more intriguing details that you would be better reading and viewing at the iFixit iPhone 4 Teardown.