10. A method of compressing a Short Message Service (SMS) message, the method comprising: comparing characters input by a user with a stored sentence table of recommended sentences and determining whether there is at least one recommended sentence among the recommended sentences of the sentence table that includes the input characters based on a result of the comparing; if it is determined that there is the at least one recommended sentence that includes the input characters, displaying the at least one recommended sentence; displaying a recommended sentence selected from among the at least one recommended sentence that is displayed; converting the displayed recommended sentence that is selected into a compression code; and transmitting an SMS message that includes the recommended sentence converted into the compression code, wherein a size of the compression code for the displayed recommended sentence is a predetermined fixed size regardless of the number of words in the at least one recommended sentence, wherein the predetermined fixed size is used to determine whether a character or a sentence in the SMS message is a compression code.
10. A method of compressing a Short Message Service (SMS) message, the method comprising: comparing characters input by a user with a stored sentence table of recommended sentences and determining whether there is at least one recommended sentence among the recommended sentences of the sentence table that includes the input characters based on a result of the comparing; if it is determined that there is the at least one recommended sentence that includes the input characters, displaying the at least one recommended sentence; displaying a recommended sentence selected from among the at least one recommended sentence that is displayed; converting the displayed recommended sentence that is selected into a compression code; and transmitting an SMS message that includes the recommended sentence converted into the compression code, wherein a size of the compression code for the displayed recommended sentence is a predetermined fixed size regardless of the number of words in the at least one recommended sentence, wherein the predetermined fixed size is used to determine whether a character or a sentence in the SMS message is a compression code. 12. The method of claim 10 , wherein each of the predetermined fixed size is two bytes.