Fake system phone number? topic

With xprivacy it's possible to spoof your number, got i miss it, but since we don't have that, has anyone figured out how to do this on lollipop yet?

My problem is that I use my google voice number for everything, but some apps insist on using the number reported by the system/sim, looking for a workaround.

Have root set up already, just can't find anything that can spoof the telephone manager API... Any pointers?