Orange Guinea-Bissau APN Settings for Apple iPad Pro 12.9 (2017)

From main menu, select Settings and then Cellular.

Check that Cellular Data is turned on.
Tap Cellular Data Options and then Cellular Data Network. 
(If this setting does not appear it cannot be configured manually. Please contact the seller.)

Go to Cellular Data and enter information as below

APN: internetogb
Username:
Password:

Go to LTE Setup (Optional) section and enter information as below

APN: (Leave Blank)
Username: (Leave Blank)
Password: (Leave Blank)

Press the Home button to save the APN and exit to the main screen.
Restart the iPhone.