Centimeter Accurate GPS for iPhone?
Are there any good solutions out there to improve the accuracy of the GPS location on iPhones (I have a 6+)? I was looking at the Bad Elf plug in (http://bad-elf.com/products/be-gps-1008) and the Dual Electronics (http://gps.dualav.com/explore-by-product/xgps150a/). They both have some really cool features including slightly better accuracy then the iPhone has here in the US (2-3 meters versus 9-10 meters).
I have seen articles where people replace their antennas but I am hoping for a solution that can give centimeter accuracy that will not void my Apple Care.
Thanks Much!