By default, the APN data is automatically installed on the LG device via the SIM card or network, but if the configuration has not been completed correctly or has not been done at all, the access point (APN) can also be added manually on the LG device.

Note: In some cases, after adding the APN data, the LG device must be restarted.

Android 9 | LG UX 9.0
Step 1:  Open the  Settings
Step 2:  Tap on  Mobile networks
Step 3:  Tap on  Access Point Names
Step 4:  Open the  Menu
Step 5:  Tap on  Add APN
Step 6:  Enter all required  data
Step 7:  Open the  Menu
Step 8:  Tap on  Save
  1. Open the Settings
  2. Tap on Mobile networks
  3. Tap on Access Point Names
  4. Open the Menu
  5. Tap on Add APN
  6. Enter all required data
  7. Open the Menu
  8. Tap on Save

LG Instructions