Argox PT-90 - Manual (Page 46)

User’s Manual 40
3. In Phonebook tab, you can add, modify, and delete phonebook.
F IGURE 3-47 P HONEBOOK
4. In Security tab, you can lock or unlock SIM card and change PIN code.
F IGURE 3-48 S ECURITY
5. In Center tab, you should setting SMS center before sending SMS.
F IGURE 3-49 C ENTER