During a call, press the snapshot button to send a snapshot.
在呼叫过程中, 按Snapshot键发送一幅快照。
Also, access a full-screen menu, such as call, will erase the snapshot from memory.
同样进入全屏菜单, 如Call, 也会从内存中删除快照。
Send or receiving a new snapshot overwrite the previous image.
发送或接收一幅新的快照会覆盖前面的图象。