Phone GPS Inaccurate or Location Jumping? How to Fix It

Short answer

A phone works out where it is from several sources at once: GPS satellites, nearby Wi-Fi networks, cell towers and its motion sensors. When the satellites are hard to see, the phone leans on Wi-Fi and cell data, which is far less exact. That is when the blue dot drifts, jumps a block over, or puts you in the house next door. Most of the time nothing is broken. Check that location access is set to precise for the app, turn off battery saver, turn on Google Location Accuracy on Android, update the phone and the map app, and test outside with a clear view of the sky. If the accuracy is still poor in an open field after a few minutes, the GPS hardware or antenna may be at fault.

Start with our GPS test. It shows your fix, the accuracy radius in meters and feet, and how long the phone took to lock.

Why the location jumps

• Fallback to Wi-Fi or cell towers. In Apple’s developer forums, an Apple engineer explained that when the iPhone can’t get a clear GPS fix, it falls back to Wi-Fi or cell-tower positions, and a Wi-Fi-based position typically reports an accuracy of 65 meters or more. Android phones work the same way. A sudden jump often means the phone just switched sources.
• Buildings and reflections. The same engineer named poor sky view and signals bouncing off buildings as common causes, especially in city centers with glass towers. Satellite signals that reflect before they reach the phone make it think you are somewhere you aren’t.
• Indoors. Roofs and walls block much of the satellite signal. Google says its location service also uses the phone’s motion sensors, which helps most indoors or near large buildings, where GPS may be weak.
• Approximate location. iPhone and Android 12 and later let you give an app only your approximate area. A map app with approximate access will show a wide circle, not your street.
• Battery saver. Guiding Tech notes that battery saver mode can limit GPS tracking and background data, so the map updates less often and lags behind you.
• A Wi-Fi network logged in the wrong place. Phones use the known positions of nearby Wi-Fi networks. If a router was moved, the phone may place you where it used to be. The sign is a location that is wrong in the same spot indoors but correct outside.

Step 1: Test the GPS

1. Go outside, away from tall buildings and trees, with as much open sky as you can find. A park or an open parking lot works.
2. Open the GPS test in Chrome or Samsung Internet on Android, or Safari on iPhone, and allow location access when asked. If the browser asks whether to share a precise or approximate location, choose precise.
3. Hold the phone still, screen up, and wait. A first fix can take longer if the phone hasn’t used GPS for a while or has no data connection.
4. Watch the accuracy number. Outdoors with open sky it should shrink to a few meters. Note how low it gets and whether it stays there.
5. Repeat indoors near a window, then deep inside the building. Seeing the accuracy grow indoors is normal.

The accuracy figure is the phone’s own estimate, not a guarantee. The Apple engineer pointed out that even a reported accuracy under 10 meters doesn’t prove the position is right. If the number looks good but the dot is clearly wrong on the map, compare the coordinates with a second app.

Step 2: Check the settings on iPhone

• Location Services. Settings → Privacy & Security → Location Services must be on.
• Precise Location for the app. On the same screen, tap the app (Maps, Google Maps, your ride or delivery app) and turn on Precise Location. Do the same for Safari Websites if you use a web map. iPhone Life lists this as the first fix.
• Date and time. Settings → General → Date & Time, and keep Set Automatically on. A wrong clock or time zone can upset location.
• Compass Calibration. Settings → Privacy & Security → Location Services → System Services has a Compass Calibration switch. Leave it on so the heading and blue arrow point the right way.
• Low Power Mode. Turn it off while you navigate and test again.

Step 3: Check the settings on Android

• Location on. Pull down quick settings and make sure Location is on.
• Google Location Accuracy. On Android 12 and later: Settings → Location → Location services → Google Location Accuracy, and turn on Improve Location Accuracy. On Android 11 and earlier it is under Settings → Location → Advanced. Google says this service uses Wi-Fi, cell towers, GPS and the phone’s sensors to find you faster and more accurately.
• Wi-Fi and Bluetooth scanning. In the same Location services menu, turning on Wi-Fi scanning and Bluetooth scanning lets the phone use nearby networks for location even when Wi-Fi or Bluetooth is off.
• Precise location for the app. Press and hold the map app’s icon, tap App info → Permissions → Location, and turn on Use precise location. Menu names vary a little by brand.
• Battery saver. Turn off battery saver or any power mode that limits background activity, and check that the map app is not set to a restricted battery mode.

Step 4: Calibrate the compass

If your position is right but the arrow points the wrong way, or the map spins as you walk, the problem is the compass, not GPS. Open our compass test and compare it with a known direction, such as a street you know runs north to south. Then move the phone in a slow figure-8 a few times, away from metal desks, car mounts, speakers and magnetic cases. Magnetic accessories are a common cause of a bad heading.

Step 5: Restart, update and refresh the app

1. Turn Airplane Mode on for a minute, then off. This makes the phone drop and reconnect its cell and Wi-Fi connections.
2. Restart the phone.
3. Update. Install the latest iOS or Android update and the latest version of the map app.
4. Clear the map app’s cache (Android). Press and hold the app icon, tap App info → Storage → Clear cache. This doesn’t delete saved places.
5. Try a second app. If only one app is wrong and the GPS test and another map agree, the problem is in that app, not the phone.

Step 6: Reset location settings

On iPhone, Settings → General → Transfer or Reset iPhone → Reset → Reset Location & Privacy puts location settings back to default. Every app will ask for location permission again, so you will need to approve them one by one. On Android, the reset options under Settings → System (or General management) → Reset can reset network settings or all settings without deleting photos or apps. Leave a full factory reset until a repair shop or the maker asks for it, and back up first.

What your results mean

• Accurate to a few meters outdoors, wide indoors: normal. Indoor positions come mostly from Wi-Fi and sensors.
• Accurate in the GPS test, wrong in one app: that app’s permission (approximate location), cache or a bug.
• Wrong in the same indoor spot every time, right outside: probably a Wi-Fi network logged at the wrong place.
• Right place, arrow pointing the wrong way: the compass needs calibration or a magnet is nearby.
• Never locks, or stays wide outdoors with open sky after every step: a likely hardware or antenna fault.

When to repair or replace

If the phone still can’t get a tight fix in an open space after the settings, updates and a reset, the GPS antenna or a connection inside may be damaged. That is more likely after a drop, water exposure, or a repair that opened the phone, so if location got worse right after a screen or battery job, go back to that shop first. For a phone under warranty, carrier protection or AppleCare, contact the maker or carrier before paying a third-party shop. Get a written quote and compare it with the phone’s value using our phone value estimator. On an older phone with other faults, replacing it can make more sense than repairing GPS alone.

In the UK, Canada and Australia the steps are the same. Only warranty and consumer-rights rules differ, so ask the retailer first about a faulty newer phone.

Buying a used phone?

Test location in person, outdoors. Open the GPS test and check that it locks and the accuracy tightens, then open the compass test and turn on the spot. Our guide to testing a used phone covers the rest of the checks, and the used iPhone checklist adds the iPhone-specific ones. If the seller has replaced the screen or back glass, test GPS and Wi-Fi with extra care, since antennas sit close to those parts.