Breaking Down SoftBank's 'Internet Machine' [Part 1] (page 2)

May 8, 2008
Nikkei Electronics Teardown Squad

The main board was arranged under the keypad. The keypad circuitry was mounted on the side under the keypad and LSI chips on the other side (main camera side). A sub board, equipped with the USIM and microSD/SDHC memory card slots, was mounted on the main camera side. The structure that has the card slots on a separate board is identical to that of the 921SH.

Many of the LSI chips on the main board were same as those used in the 921SH or made by the same manufacturers. The LSI used for the W-CDMA communication was a product of Ericsson of Sweden, and the application processor was made by Toshiba Corp.

These components both had the same part numbers as the components in the 921SH. The 1seg tuner module was likely made by Sharp. But the IC incorporated in the tuner module had a model number different from that in the 921SH or in its predecessor "Fullface SoftBank 913SH."

The flash memory was the only major LSI supplied by a different manufacturer. While the flash memory used in the 922SH is believed to be made by Franco-Italian joint venture STMicroelectronics, the 921SH is equipped with a product of Spansion of the US.

The main camera of the 922SH uses a CMOS sensor with an effective pixel count of 2 Mpixels. The 913SH incorporates a camera with an image sensor of the same resolution. We broke down these camera modules and discovered that the number of lenses and the dimensions of the sensor in the both modules were equal.

This may indicate that the camera module in the 922SH and the 913SH are the same components. However, these modules had different model numbers, ie "W8WSLB 28295" on the 922SH and "W7WSLA 64044" on the 913SH.