Which GPS receiver is most accurate for the iPhone 4S?

AI Thread Summary
The accuracy of GPS on smartphones can be impressive, particularly under optimal conditions, with users reporting precision within a few feet. For instance, one user noted their phone's GPS accuracy measured at 12.1 feet while outdoors. This level of precision is beneficial for navigation, especially while driving. Various apps, such as "GPS Test" for Android, are available to monitor GPS accuracy, although some may have poor reviews. Comparisons between different devices, including iPhones and Android models, highlight varying performance levels in GPS accuracy.
moonman239
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How accurate does the GPS on your phone tend to be? When I'm outside, under good conditions I can see impressive accuracy, especially considering the precision of the measurements. I walked to the left of a building this afternoon, out by the parking lot. The phone thought I was positioned just a few feet away. Not bad, huh?
 
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I can't give you any technical, but I've been impressed as well. It's real nice for driving.
 
There's probably an app for that. I have one for droid called "gps test" that says 12.1 feet at the moment.
 

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