reports are greatly exaggerated
> In other words, not only will your iPhone not know where it is, but neither will your
> geotagging camera accurately insert location info into your photos' metadata, nor
> your car's navigation system help you find your way out of the morass of freeways
> that is Los Angeles.
What they're worried about is that they might not be able to keep a complete set of 24 satellites going, in order to enable most places to always have at least eight visible. But you only actually need to have four satellites visible to get a 3D position with plenty of accuracy for uses such as navigation in a car.
Their spec says they'd like to have 24 going, but the deterioration of the service is gradual, and even half that number would work fine for almost any civilian use other than high precision surveying.