1. My understanding is that the iPhone doesn't give very reliable coordinates. I've generally though that my Droid2 isn't too bad, but hand-held GPS units (properly used) are far preferred for placing caches.
2. If you hid a cache with the Garmin OpenCaching app, it won't show up here, we are not affiliated with Garmin (and predate their use of the name "OpenCaching"). This site is part of a
worldwide OpenCaching network.
3. Try checking out the
Geocaching Buddy 4 OC in the App Store.