Nordmende LITE400F User Manual page 22

Chapter 5
MESSAGGE
NOTE ON MMS: the phone supports the sending of MMS; to be
able to properly manage this function, the relevant APNs must
be correctly set up on your phone.
The APN can be changed in the Menu -> Message -> Options ->
Settings, and then scroll with the right arrow key to change the
MMS accounts for both SIMs.
To know how to properly set up your APN, please contact your
network operator.
USER MANUAL | page 22