How to receive correctly the information for an incoming call on my landline?

Orange Phone app needs to be launched if you want to see the real caller number.

If the app is not launched, you will see the incoming call but only with an information 'My landline / Incoming call" and not the real calling number.

However, if the app is launched, running in foreground or background, then you will see the call screen with "My landline" name and the real caller number (or his name if he is one of your contacts). You will also see a notification that displayed spam information on this caller number as if you make a manual search of this number in Orange Phone app.

Note that the real information on the caller number will not be displayed if Low Power Mode is activated.