How to Improve GPS Accuracy on Your Phone

Published 2026-10-16 · Marion Phone Repair

Your phone GPS is inaccurate. The blue dot on the map shows you on the wrong street, navigation gives incorrect turn-by-turn directions because it thinks you are somewhere else, or the location jumps around erratically between positions. GPS takes a long time to get a fix when you open a navigation app, and in some areas the accuracy is so poor that navigation is unusable. Ride-sharing apps show your pickup location a block away from where you actually are. GPS accuracy depends on satellite signal quality, phone hardware, software settings, and environmental factors. Most GPS accuracy problems can be significantly improved through settings and technique rather than hardware repair.

Check location accuracy settings

Android

1. Go to Settings, Location. Make sure Location is turned on
2. Tap Location Services (or Advanced, depending on your Android version). Look for Google Location Accuracy (or Improve Location Accuracy). Make sure it is enabled. This feature uses Wi-Fi networks, cell towers, and sensors in addition to GPS satellites to determine your position more quickly and accurately
3. When Google Location Accuracy is disabled, the phone relies only on GPS satellites, which takes longer to get a fix and is less accurate in urban areas with tall buildings
4. Check that Wi-Fi Scanning and Bluetooth Scanning are enabled under Location Services. These features scan for nearby Wi-Fi access points and Bluetooth beacons to assist GPS positioning even when you are not connected to Wi-Fi or Bluetooth. They significantly improve indoor and urban accuracy

iPhone

1. Go to Settings, Privacy and Security, Location Services. Make sure Location Services is on
2. Scroll down and tap System Services. Make sure the following are enabled: Motion Calibration and Distance, Compass Calibration, and Wi-Fi Networking. These help the iPhone use multiple data sources for accurate positioning
3. iPhone does not have a toggle to disable assisted GPS — it always uses all available positioning sources (GPS, GLONASS, Galileo, Wi-Fi, cell towers, Bluetooth). If location is inaccurate on iPhone, the issue is typically environmental or hardware-related

Improve satellite signal

• Go outside: GPS signals come from satellites in orbit and are very weak by the time they reach your phone. Buildings, roofs, and vehicles block or weaken GPS signals. For the best accuracy, stand in an open area with a clear view of the sky. Even stepping a few feet away from a building wall can improve signal quality
• Avoid urban canyons: Tall buildings in city centers reflect GPS signals off their surfaces, creating multipath errors where the phone receives the same signal multiple times from different angles. This causes the location to jump between positions. There is no phone-side fix for multipath in dense urban areas — it is a fundamental limitation of satellite positioning in that environment
• Wait for a full fix: When you first open a navigation app, the phone needs time to acquire satellites and calculate position. Cold start (first GPS use of the day) can take 30 seconds to 2 minutes. Let the phone sit with the navigation app open for a minute before starting to move. Moving while the GPS is still acquiring satellites produces inaccurate initial positioning
• Phone orientation: The GPS antenna in most phones is located along the top edge. Holding the phone with the top pointed toward the sky (not flat in your hand) can improve satellite reception in marginal signal conditions

Calibrate the compass

GPS provides position, but the compass determines which direction you are facing on the map. A poorly calibrated compass causes the blue navigation arrow to point the wrong way even when the position is correct:

• Android: Open Google Maps, tap the blue dot showing your location, then tap Calibrate Compass. Follow the on-screen instructions — you typically need to move the phone in a figure-eight pattern several times. The calibration screen shows the current compass accuracy (low, medium, high)
• iPhone: Open the Compass app. If calibration is needed, a calibration prompt appears asking you to tilt the phone and roll a ball around the screen. Follow the instructions until calibration completes
• Magnetic interference from phone cases with magnetic closures, magnetic car mounts, or nearby electronics can degrade compass accuracy even after calibration. If you use a magnetic phone mount in your car, the compass may be inaccurate whenever the phone is on the mount

Clear GPS cache (Android)

• Android stores cached satellite position data (almanac and ephemeris data) that helps with faster GPS fixes. If this cached data becomes stale or corrupted, the phone takes longer to get a fix or calculates an incorrect position
• Use a GPS reset app (GPS Status and Toolbox is a well-known free option) to clear the AGPS (Assisted GPS) data and download fresh satellite information. Open the app, tap the menu, and select Manage A-GPS State, then Reset and Download
• After resetting, go outside and let the phone acquire a fresh GPS fix. The first fix after a reset takes longer (up to 2 minutes) but subsequent fixes should be faster and more accurate

App-specific fixes

• Google Maps: Make sure Google Maps has location permission set to Always or While Using. If set to Ask Every Time, the app may not get continuous location updates. Also check: Google Maps Settings, Navigation Settings, make sure Satellite View and Location are not restricted by data saver settings
• Navigation apps competing: If multiple navigation apps are running simultaneously (Google Maps, Waze, Apple Maps, a car manufacturer app), they can compete for GPS data and cause erratic behavior. Close all navigation apps except the one you are actively using
• Background location restrictions: Battery optimization features on Android can restrict GPS access for apps running in the background. If a navigation app loses GPS when you switch to another app: Settings, Apps, select the navigation app, Battery, set to Unrestricted (not Optimized or Restricted)

Hardware and environmental factors

• Phone case interference: Thick cases, especially those with metal components or built-in batteries, can attenuate GPS signals. Metal battery cases are particularly problematic because metal blocks radio signals. Test GPS accuracy with the case removed
• Phone age and hardware: Newer phones support more satellite constellations (GPS, GLONASS, Galileo, BeiDou, and QZSS) and have more sensitive GPS receivers. A phone that only supports GPS (older than 2015) has fewer satellites to work with than a modern phone that tracks satellites from four or five constellations simultaneously
• Dual-frequency GPS: Phones from 2018 onward (starting with some flagship models) support dual-frequency GPS (L1 plus L5 bands). Dual-frequency dramatically improves accuracy in urban areas by using the L5 signal that is more resistant to multipath reflections. If accuracy is critical for your use case, check if your phone supports L5 GPS
• Weather and atmosphere: Heavy cloud cover, solar storms, and atmospheric conditions can degrade GPS accuracy by delaying the satellite signals. This is typically a minor effect (a few meters) but can compound with other accuracy issues

When GPS hardware is faulty

• If GPS does not work at all (never gets a fix, even outdoors with clear sky after waiting several minutes), the GPS antenna or receiver chip may be damaged. Common causes: water damage corroding the antenna connection, drop impact disconnecting the antenna, or a previous repair where the GPS antenna flex cable was not reconnected
• A phone that gets a GPS fix but shows consistently poor accuracy (50 meters or more off, even outdoors) may have a damaged antenna that receives signals weakly. This is different from environmental accuracy issues — hardware damage produces poor accuracy everywhere, not just in challenging environments

GPS diagnosis and repair in Marion

If your phone GPS is consistently inaccurate and the steps above did not improve it, Marion Phone Repair can test the GPS hardware, check the antenna connections, verify that all satellite constellations are being received, and repair any hardware issues preventing accurate positioning.