I have done all of these things - they don't work. Take us seriously - we are not making this up. I have also been to the Apple Store who spent an hour with me to no avail. This is a software, not a hardware problem.
Location is accurate with a small location circle after after reset UNTIL APPS ARE ADDED. Tried it from restore and factor reset and also manually loaded apps one at a time. I have minimal additional apps loaded individually. Location off on all of them except maps. As soon as anything other than the default Apple apps are added, it loses exact location. All of this indicates to me this is a SOFTWARE problem that showed up immediately after the 9.3.2 update.
Maps location will often 'find' me again after a minute after I use 'find my iphone'. But at the next update, it will lose me again.
When driving, it will sometimes find me accurately. But then it does not update location correctly after finding me. So if I'm driving, it finds me, but I drive and it doesn't ping another new location for several minutes. When I move out of it's original 'circle' of location accuracy it will have lost my location again. It seems to locate me at the nearest cell phone repeater. Wrong locations are consistent - the tollbooth at the highway exit, a local cell phone tower, a house around half mile from my house.
I have lost at least 3 hours in the last week lost in the city because neither Maps nor Google Maps can find my location and does not update location in real time. It always did before this update.