Not quite sure what you were expecting really given the optics and sensor size in that case
It's in orders of magnitude smaller on both fronts! For what's on offer, it's excellent in my view and perfectly viable option (along with the other latest models with UWA lenses like the Mate 20 Pro, P30 Pro, LG G8) as a usable wide angle camera for those chance shots that don't otherwise get taken because you haven't got the d/slr/mirrorless on you at the time because it's an extra thing to carry around.