A detailed evaluation of the new KDDI 3G handheld computer.

　　　 On July 12th, KDDIAU, one of Japan’s three largest mobile communication operators and the owner of the largest number of users in Japan, released its latest three models adopting CDMA 1X WIN standard: Sanyo’s W21SA, Sanyo’s W21S and Kyocera’s W21K. As KDDI au’s high-end W21 series of WIN＋BREW is brand-new. Since au first introduced 1X WIN in November last year, it has 600,000 WIN network users in just eight months, and au’s goal is to break through the 3 million user mark by the end of this year, and the user base will gradually transition from CDMA 1X to CDMA 1X WIN next year. After a long wait of 8 months, KDDI au once again took a crucial step and launched three painstaking works. So what strength do these three mobile phones have, which makes users pay such a long wait, and makes KDDI au have such high hopes?

Let’s take a look at the similarities and differences in the functions of the three mobile phones as a whole:

From left to right are Sanyo W21SA, W21S and Kyocera W21K respectively.

Common features of three mobile phones:

1. MSM6500 chip is adopted.

　　 The three WIN mobile phones evolved from MSM5500 chips to MSM6500, and the CPU core was also upgraded from ARM7 to ARM. Compared with MSM6100 used in A5500 series mobile phones, the CPU clock frequency of MSM6500 chipset has also been greatly improved.

2. Support 600KB BREW applications.

　　　 The version of BREW or WIN mobile phone always adopts version 2.1, but the supported application size has been expanded from the original 300KB to 600KB. KDDI au has also prepared large-capacity EZ-APPL (BREW-based application launched by KDDIAU, similar to China Mobile’s treasure chest) for users.

3. Support Flash browsing

　　　 All three mobile phones can support up to 100KB Flash. The latest version of Macromedia Flash for mobile phones, Flash Lite version 1.1, is adopted, and SVG-T(Scalable Vector Graphic-T fine vector image) format is supported, which provides a guarantee for users to browse the new dynamic Ezweb.

4. Kiuta, a characteristic incoming call tone, can be transferred and stored.

　　 As a convenient policy for changing users, all three mobile phones support users to transfer copyrighted content such as "Ki uta" to other mobile phones with the same number through external memory cards. And the bit rate of the characteristic incoming call tone "Ki uta" is increased from the original 24Kbps to 32Kbps, and stereo (16Kbps×2) is supported.

5. Support USB1.1 specification.

　　　 All three mobile phones support the USB1.1 standard. Connecting a mobile phone to a PC through a USB cable will identify it as. In addition, by using the attached MySync storage management software, users can simply realize high-speed data transmission.
　
　　　　The basic functions of these three mobile phones are similar, but they also have their own characteristics: W21SA has a unique revolving two-axis design and is equipped with a megapixel camera; The "W21S", which also has the function of megapixel license plate, also has the function of automatic correction of camera shake; And "W21K" has super user-defined function. Let’s take a look at three mobile phones in the form of charts.

Functional differences:

1. External storage and location functions:

2 camera function:

3 folder storage capacity: