The fact is for me the iPhone does not have mapping any more. The Apple effort is too appalling to count. They've left us without mapping.
Joke locations, long-dead retail chains showing up, football teams in the wrong city, pins so approximate to be laughable. A search box that returns 'no results found' over and over unless there happens to be a POI with the your search term in its title. This is years behind Nokia Maps, which is at least functional, let alone Google Maps. I'm sure there are crappy little apps in the App Store that get you around better.
This is a horror show for Apple. It's not just that Maps is bad - it reveals that Apple's leadership must be all over the shop right now. Tim Cook is a clueless bean counter like Gil Amelio. Hell, the man employed a guy from Dixon, UK (a chain with a reputation for the worst customer service in Britain) to run global retail! He's a tool. A fatter, heavier iPad 3? Steve would have delayed it.
This is like Copland - Apple trying to do things in house without the leadership, skills, and resources to do it. I feel for the maps team - the product is so appalling that they must lack everything they need to make it good. It's not their fault. It's shabby leadership.
Bing is info-rich but the iPhone app is dreadful. Yes, you can use the Google web app but it's more fiddly and sluggish.
There is no mapping on the iPhone.