How long does it take Apple to update or correct "Maps" data?
I have tried to update Maps data from my iPhone 5 several times by using "Report an Issue" under the ℹ button. I have sent screen images and described streets that no longer exist due to construction in my area. But old street names remain and the imagery is at least 4 years old. How long does it take to make updates?
By the way, I have made updates to Open Street Maps (instantly) and Google Maps (takes longer with review). Apple seems to use a proprietary approach.
iPhone 5, iOS 9.3.2