The code is the first four digits of every cell phone number. No matter where you are, you cannot call a cell phone number without this code.

这个代码就是手机号的前四位，不管从哪个地方打电话，都不能少了这4位。

youdao

The code is the first four digits of every cell phone number. No matter where you are, you cannot call a cell phone number without this code.

这个代码就是手机号的前四位，不管从哪个地方打电话，都不能少了这4位。

youdao