Top 10 Motorola products
- China.org.cn, August 17, 2011
GSM Digital Cellular System (1991) 第一个GSM蜂窝系统
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Motorola demonstrated the world's first working-prototype digital cellular phones using GSM standard in 1991. [Photo: finalcn.com] |
In 1991, Motorola demonstrated the world's first working-prototype digital cellular system and phones using GSM standard in Hanover, Germany.