Most cell phone users only use the dialing and address book functionality and quickly get lost if they try to access other functions.
他们若试图使用其他功能，则很容易迷失在层次结构的菜单中。
The phone book can also limit access of incoming SMS messages, which can read and write data as well as control outputs.
电话簿也可以限制接收到的短消息的访问，它可以读取和写入数据，以及控制输出。
The phone book can also limit access of incoming SMS messages, which can read and write data as well as control outputs.
电话簿也可以限制接收到的短消息的访问，它可以读取和写入数据，以及控制输出。
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