中老年手机用户常常只使用一些简单功能，比如电话号码簿。

现行的手机键盘常按拼音首字母排列号码簿，造成个别键对应的姓名极多，重码现象严重

-The current regular cell phone keypad numbers arranged according to the first letter of alphabet books, resulting in the name of the individual keys correspond to very much emphasis on the phenomenon of grave yards