set APN on  i metos1 ; i metos2 ; ECO D2 use 


1.      Set user-defined APN:

Code: ! serial_number 0 apn,user_name,password !



Set APN on i metos3.3 and ECO D3 you can use  both Versions 


1.      Set user-defined APN:

Code: ! serial_number 0 apn,user_name,password !


2.      Set user-defined APN full definition:

Code: ! serial_number 3 country_name,MCC,MNC,apn,user_name,password !