My iPhone location is wrong

Check your phone’s settings:

• Settings/Privacy & Security/Location Services: ON
• Settings/Privacy & Security/Location Services/Find My: While Using
• Settings/Privacy & Security/Location Services/Find My/Precise Location: ON
• Settings/Privacy & Security/Location Services/System Services/Find My iPhone: ON
• Settings/Wi-Fi: ON (does not have to be connected to a network, but must be on)
• Settings/Bluetooth: ON

Any VPN app on your phone: OFF

If you have a router that was previously in NC turn it off. If that fixes the problem, turn it on, go outdoors with a clear view of the sky but where you can still receive Wi-Fi from that router and wait a few minutes. This should relocate the Wi-Fi router in Apple’s database.