Help! No Gps when incoming call

Got a weird problem. My lg g3's gps was working great. I've switched networks to vodafone (i'm in australia) and suddenly every time i use my gps and get an incoming phone call (sometimes even txt messages) the app i'm using (waze) just losses all gps signals. After i finish the call, 15 seconds or so, gps is back. Its frustraiting and i need to have it the way it was.

Any ideas? Tried some ntp or something like that and apps from playstore but nothing works. My lg is not rooted and i don't wish to do so.

Thanks