I agree the app should have access to the storage to store data.
I agree to get access to the phone function to get an unique number : my phone number to identify me.
But why is it needs access to my phone contacts? It has nothing to do with my UBI friendlist, that is just leeching "irrelevant" extra data from my phone for their own use.

Sorry UBI, unless I can run without letting the app access to my contact list, I won't be using the app.

An Android user.