How to Fix GPS and Location Accuracy Issues on Your Phone

Published 2026-10-16 · Marion Phone Repair

Your phone shows you in the wrong location on the map, or your position dot jumps around erratically, or navigation gives incorrect directions because it thinks you are somewhere else. GPS accuracy problems make navigation apps unreliable, ride-sharing apps unable to find you, and location-based services frustrating. The causes range from simple settings that are turned off to physical obstructions blocking satellite signals.

How phone GPS works

Your phone determines its location using multiple systems simultaneously. GPS satellites (US system), GLONASS (Russian), Galileo (European), and BeiDou (Chinese) each provide positioning data. Your phone combines signals from as many satellites as it can reach to calculate its position. In ideal conditions — open sky, clear view of the horizon — this is accurate to within 3 to 5 meters. But phones also use Wi-Fi networks, cell towers, and Bluetooth beacons to assist positioning, especially indoors where satellite signals cannot reach.

When location is inaccurate, it is usually because the phone cannot get a strong signal from enough satellites, the assisted positioning data is stale, or a software setting is limiting the phone's ability to use all available location sources.

Turn on high-accuracy location mode

The single most effective fix for GPS accuracy is making sure the phone uses all available location sources, not just GPS satellites.

Android

1. Open Settings, Location
2. Make sure Location is turned On
3. Tap Location Services or Advanced (depending on your Android version)
4. Enable Google Location Accuracy (or High Accuracy Mode on older Android versions). This allows the phone to use Wi-Fi scanning, Bluetooth scanning, and cell tower data in addition to GPS satellites
5. Make sure Wi-Fi Scanning and Bluetooth Scanning are enabled even if Wi-Fi itself is turned off. The phone uses nearby Wi-Fi networks for positioning without connecting to them

iPhone

1. Open Settings, Privacy and Security, Location Services
2. Make sure Location Services is On
3. Scroll to the bottom and tap System Services
4. Make sure these are enabled: Wi-Fi Networking, Compass Calibration, and Location-Based Apple Ads (the last one helps Apple maintain its Wi-Fi positioning database which benefits your location accuracy)

Check app permissions

Even if location services are on at the system level, individual apps may not have permission to use precise location:

• Android: Settings, Apps, select the app, Permissions, Location. Set to Allow All the Time or Allow Only While Using the App. Also check that Precise Location is toggled on — Android 12 and later lets you grant approximate location instead of precise, which limits accuracy to about a mile
• iPhone: Settings, Privacy and Security, Location Services, select the app. Choose While Using the App or Always. Toggle on Precise Location — if this is off, the app only gets your approximate area, not your exact position

Improve satellite signal reception

GPS signals are weak radio signals from satellites 20,000 kilometers above Earth. They cannot penetrate buildings well and are weakened by dense tree cover, urban canyons (tall buildings on both sides), and heavy cloud cover.

• Go outside: If you are getting a poor GPS fix indoors, step outside or near a window. GPS accuracy improves dramatically with a clear view of the sky
• Wait for a fix: When you first open a navigation app, the phone needs time to acquire satellite signals. This cold start can take 30 seconds to several minutes, especially if the phone has been off or in airplane mode. Let the app run for a minute before concluding the GPS is broken
• Hold the phone correctly: Your hand position matters. Covering the top or back edges of the phone with your palm can partially block the GPS antenna. Hold the phone with the screen facing up and the top edge unobstructed
• Remove thick cases: Most cases do not affect GPS, but cases with metal plates (for magnetic car mounts), foil-lined wallets, or integrated kickstands with metal components can attenuate the GPS signal. Try removing the case and testing

Clear the GPS cache (Android)

Android phones maintain a cache of satellite almanac data that helps them find GPS satellites quickly. If this data becomes stale or corrupted, the phone may struggle to lock onto satellites or lock onto the wrong ones.

To clear it, install a GPS status or GPS test app from the Play Store (such as GPS Status and Toolbox). Open the app, access its menu, and select Reset AGPS Data then Download AGPS Data. This clears the stale almanac and downloads fresh satellite position data from the internet, allowing the phone to find satellites faster.

Alternatively, toggling Airplane Mode on for 30 seconds and then off forces the phone to re-acquire satellite data from scratch.

Recalibrate the compass

The compass sensor affects the direction your position dot faces on the map and helps the phone determine which way you are moving. A miscalibrated compass causes the blue dot arrow to point the wrong way and can confuse navigation turn-by-turn directions.

• Google Maps: Open Google Maps, tap the blue dot showing your location, tap Calibrate. Follow the on-screen instructions to move your phone in a figure-8 pattern. Continue until the beam (the light blue cone showing your direction) narrows from wide to narrow
• iPhone: Open the Compass app and follow calibration prompts if they appear. If the compass seems off, go to Settings, Privacy and Security, Location Services, System Services, and make sure Compass Calibration is enabled

Check for interference

Certain conditions and accessories interfere with GPS signals:

• Magnetic mounts: Metal plates attached to the back of the phone (for magnetic car mounts) sit directly over the GPS antenna in some phone designs. If your GPS accuracy degraded after attaching a magnetic plate, remove it and test
• Dashboard mounts: Windshield-mounted phone holders generally provide good GPS reception. Dashboard mounts can be worse because the dashboard and windshield heat-reflective coating partially block the sky view. If GPS is poor with a dashboard mount, try a windshield mount
• Tinted windows: Metallic window tint, especially on windshields, can reduce GPS signal strength. This is uncommon on most vehicles but can be a factor in heavily tinted cars

Software fixes

Update the phone

GPS improvements and bug fixes are included in system updates. Check for available updates in Settings, System, Software Update (Android) or Settings, General, Software Update (iPhone).

Reset network settings

This resets all network-related settings including cellular, Wi-Fi, Bluetooth, and VPN configurations. Since assisted GPS relies on network data, resetting can fix positioning issues caused by corrupted network configuration:

• Android: Settings, System, Reset Options, Reset Wi-Fi, Mobile and Bluetooth
• iPhone: Settings, General, Transfer or Reset iPhone, Reset, Reset Network Settings

You will need to reconnect to Wi-Fi networks and re-pair Bluetooth devices after this reset.

Check for battery optimization

Aggressive battery saving modes can restrict GPS access for background apps. If location tracking is inaccurate only when the app is in the background (for example, fitness tracking or delivery driving), check that the app is excluded from battery optimization. On Android: Settings, Apps, select the app, Battery, set to Unrestricted. On iPhone, ensure Background App Refresh is enabled for the app in Settings, General, Background App Refresh.

GPS hardware problems

If no software fix restores GPS accuracy, the GPS antenna or receiver chip may be damaged. Water damage, drops, and even a loose antenna cable inside the phone can cause permanent GPS degradation. The GPS antenna is typically a small component near the top of the phone, and its connection to the main board can be disrupted by physical impact.

GPS repair in Marion

If your phone's GPS is persistently inaccurate and the troubleshooting above did not fix it, Marion Phone Repair can test the GPS hardware, check for antenna or board-level issues, and repair or replace the affected components to restore accurate location tracking.