专用的发送、结束和后退按钮，以及小巧的滚动导航键，让G 1比iPhone更加灵活，但操作也更加复杂。
The dedicated Send, end and Back buttons, and the tiny trackball for scrolling, make the G1 more flexible than the iPhone, but also more complicated.
许可服务器在他的对所有许可检查响应中包含了有效期，这个操作通过在响应中追加有效期结束时间戳作为VT键下额外的数值来实现的。
The licensing server includes the validity period in its response to all license checks, appending an end-of-validity timestamp to the response as an extra under the key VT.
对本机操作请按＃键，对其他固话预付费操作请输入电话号码，按＃结束。
Please input your account number, end it with the pound key. If you want to use this phone, press the pound key directly.
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