# W21T

> Japanese mobile phone

**Wikidata**: [Q11253166](https://www.wikidata.org/wiki/Q11253166)  
**Source**: https://4ort.xyz/entity/w21t

## Summary
The W21T is a Japanese mobile phone model manufactured by Toshiba and released on November 19, 2004. It was designed for use on the KDDI network, a major telecommunications operator in Japan. As a cell phone model from the early 2000s, it represents Toshiba's contributions to consumer electronics during that era.

## Key Facts
- **Manufacturer**: Toshiba, a Japanese multinational conglomerate founded in 1875.
- **Release Date**: November 19, 2004.
- **Operator**: KDDI, a leading Japanese telecommunications company.
- **Country**: Japan.
- **Mass**: 126 grams.
- **Classification**: Instance of "cell phone model" and subclass of "mobile phone."

## FAQs
### Q: Who manufactured the W21T?
A: The W21T was manufactured by Toshiba, a Japanese electronics and engineering conglomerate.

### Q: When was the W21T released?
A: The W21T was released on November 19, 2004.

### Q: What network was the W21T designed for?
A: The phone was designed for use on the KDDI network, a major telecommunications provider in Japan.

## Why It Matters
The W21T is a notable example of early 2000s mobile phone technology in Japan, reflecting Toshiba's role in the consumer electronics industry. As a device released for the KDDI network, it contributed to the growth of mobile communication services during a period of rapid technological advancement. While specific technical innovations are not detailed in available sources, the W21T exemplifies the collaboration between manufacturers like Toshiba and telecommunications providers to meet consumer demand for mobile connectivity. Its release in 2004 situates it within the broader context of Japan's digital transformation, where mobile phones became integral to daily life.

## Notable For
- **Manufacturer Heritage**: Produced by Toshiba, a company with a history dating back to 1875 and known for its diverse contributions to electronics and engineering.
- **Network Affiliation**: Designed for KDDI, one of Japan's "Big Three" mobile carriers, ensuring compatibility with a widely used network.
- **Release Timing**: Launched in 2004, a year marked by significant growth in mobile phone adoption and 3G network development in Japan.
- **Physical Specifications**: Weighed 126 grams, a design consideration reflecting portability needs of the era.

## Body
### Release and Availability
The W21T was released on **November 19, 2004**, exclusively for the Japanese market. It operated on the **KDDI network**, a key player in Japan's telecommunications sector. As a carrier-specific device, its availability was tied to KDDI's subscription services.

### Specifications
- **Mass**: 126 grams.
- **Country of Origin**: Japan.
- **No Additional Technical Details**: Sources do not specify screen size, camera capabilities, or operating system, limiting confirmed details to basic physical and operational attributes.

### Manufacturer and Operator
- **Toshiba**: Founded in 1875, Toshiba's involvement in the W21T highlights its diversification into consumer electronics. The company's headquarters in Minato, Tokyo, underscores its domestic focus alongside global operations.
- **KDDI**: As the designated operator, KDDI's infrastructure supported the phone's functionality, aligning with its role in advancing mobile communication technologies in Japan.

### Legacy
The W21T is documented primarily through archival sources, including a 2009 snapshot of its manual on KDDI's website. Its legacy is tied to the broader evolution of mobile technology in Japan, where devices like the W21T catered to a market emphasizing reliability and network integration. While not widely recognized outside Japan, it serves as a reference point for studying early 2000s mobile phone design and carrier-manufacturer partnerships.