NavRoad Nexo EVO User Manual page 86

If the APN point is not defined, you must add it manually by
expanding the submenu in the top right corner of the screen
and selecting „New APN".
Fill in the fields with access point parameters required by
operator. Usually, it is necessary to fill the fields: "Name",
"APN", "MCC", "MNC." Often, the "Username" and "Password".
Detailed informations about your SIM card settings
requirements you can find on the operator's website.
Then save your settings by tapping "Back"