https://qooah.com/2012/06/03/motorola-%e8%88%87%e4%b8%ad%e5%9c%8b%e7%a7%bb%e5%8b%95%e8%81%af%e5%90%88%e7%99%bc%e4%bd%88%e5%85%a9%e6%ac%be-td-scdma-%e6%99%ba%e8%83%bd%e6%89%8b%e6%a9%9f/