1. A method of unlocking at least one of functions provided to a portable apparatus, comprising:

judging whether or not a predetermined first code is entered;

second judging whether or not a predetermined second code is entered, wherein the character length of said predetermined first code is shorter than the character length of said predetermined second code, if said predetermined first code is not entered; and

unlocking said one of functions provided to said portable apparatus, if said predetermined first or second code is entered.

2. The method of unlocking at least one of functions provided to a portable apparatus according to claim 1, wherein characters of said predetermined first code are identical to designated several characters included in said predetermined second code.

3. The method of unlocking at least one of functions provided to a portable apparatus according to claim 2, wherein said designated several characters of said predetermined first code are consecutive characters in sequence of characters included in said predetermined second code.

4. The method of unlocking at least one of functions provided to a portable apparatus according to claim 3, wherein said consecutive characters are leftmost characters of said predetermined second code.

5. The method of unlocking at least one of functions provided to a portable apparatus according to claim 3, wherein said consecutive characters are rightmost characters of said predetermined second code.

6. The method of unlocking at least one of functions provided to a portable apparatus according to claim 3, wherein said consecutive characters are center characters of said predetermined second code.

7. The method of unlocking at least one of functions provided to a portable apparatus according to claim 1, wherein said character is a numeral number.

8. The method of unlocking at least one of functions provided to a portable apparatus according to claim 1, wherein said portable apparatus is a mobile phone.

9. The method of unlocking at least one of functions provided to a portable apparatus according to claim 1, wherein sequence of characters included in said predetermined first and second codes is changeable to another sequence of characters.

10. The method of unlocking at least one of functions provided to a portable apparatus according to claim 1, wherein each different sequence of characters included in said predetermined first and second codes is assignable to each of said functions provided to said portable apparatus, respectively.

11. The method of unlocking at least one of functions provided to a portable apparatus according to claim 1, wherein each different sequence of characters included in said predetermined first and second codes is assignable to each of selected plurality of functions among said functions provided to said portable apparatus.

12. The method of unlocking at least one of functions provided to a portable apparatus according to claim 1, further comprising;

selecting an unlocking mode wherein said predetermined first code is not used.

13. A portable apparatus with plurality of functions, comprising:

a controlling means for setting a first code and a second code; and

a storing means for storing said first code and said second code,

wherein said controlling means judges whether or not said first code is entered;

said controlling means judges whether or not said second code is entered, wherein the character length of said first code is shorter than the character length of said second code, if said first code is not entered; and

said controlling means unlocks at least one of functions provided to said portable apparatus, if said first or second code is entered.

14. The portable apparatus with plurality of functions according to claim 13, wherein characters of said first code are identical to designated several characters included in said second code.

15. The portable apparatus with plurality of functions according to claim 14, wherein said designated several characters of said first code are consecutive characters in sequence of characters included in said second code.

16. The portable apparatus with plurality of functions according to claim 15, wherein said consecutive characters are leftmost characters of said second code.

17. The portable apparatus with plurality of functions according to claim 15, wherein said consecutive characters are rightmost characters of said second code.

18. The portable apparatus with plurality of functions according to claim 15, wherein said consecutive characters are center characters of said second code.

19. The portable apparatus with plurality of functions according to claim 13, wherein said character is a numeral number.

20. The portable apparatus with plurality of functions according to claim 13, wherein said portable apparatus is a mobile phone.

21. The portable apparatus with plurality of functions according to claim 13, wherein sequence of characters included in said first and second codes is changeable to another sequence of characters.

22. The portable apparatus with plurality of functions according to claim 13, wherein each different sequence of characters included in said first and second codes is assignable to each of said functions provided to said portable apparatus, respectively.

23. The portable apparatus with plurality of functions according to claim 13, wherein each different sequence of characters included in said first and second codes is assignable to each of selected plurality of functions among said functions provided to said portable apparatus.

24. The portable apparatus with plurality of functions according to claim 13,

wherein said controlling means selects an unlocking mode wherein said first code is not used.