I just bought a Huawei P8 lite.
Number 1: E.g. 99 112233
Number 2: E.g. 79 112233
They are from the same mobile provider and have been like that for years. Never had a problem with calling them, and even other people (who know them both) can call them etc with no problem
My mobile is...
Hi, I'm using the normal application that comes with the mobile phone.
But it's not necessarily the application, as even to phone them, the mobile "gets confused"