How to test website geolocation on a real iPhone

Why desktop overrides aren't enough

Desktop browser tools can fake a position for a page open on your computer (Chrome DevTools has a Sensors panel for this). That's useful for logic, but it doesn't test the thing your users actually run: Safari on an iPhone, with iOS's permission prompts, Precise Location, the page going to the background when the user switches apps, and real touch layouts around a map. To test that, the iPhone itself has to report the location you want.

Safari's Geolocation API gets its position from iOS Location Services. When Geovo sets the iPhone's GPS location, Safari, other browsers on the iPhone and web views inside apps all read that location, like any app does. Nothing changes on your server and nothing needs to be added to the page.

Step by step

1. Serve the page over HTTPS. Browsers only expose geolocation in a secure context. A staging URL with a valid certificate works; so does an HTTPS tunnel to your local dev server. Opening `http://192.168.x.x:3000` from the iPhone won't work, even though `localhost` works on your computer.
2. Check iOS permissions. In Settings › Privacy & Security › Location Services, Location Services must be on and Safari Websites must not be Never. Safari also keeps a per-site choice (Ask, Deny or Allow) under the page menu's Website Settings.
3. Set the location. Download Geovo, plug in the iPhone (tap Trust, turn on Developer Mode) and teleport by tapping the map or searching. Save the places you test often as favorites.
4. Request it fresh. Call `getCurrentPosition` with `maximumAge: 0` while testing. With a large `maximumAge` the browser may hand back a cached position from before you teleported, which looks like "the location didn't change".
5. Test movement. Use `watchPosition` and play a walking or driving route in Geovo (or import a GPX or KML file, see routes explained). Check how your page handles a stream of updates: map re-centering, distance calculations, throttling.
6. Return to your real location in Geovo when you're done.

Debugging on the device

• Web Inspector (Mac). On the iPhone, turn on Settings › Safari › Advanced › Web Inspector, connect it to a Mac, and the page appears in Safari's Develop menu on the Mac. You can watch the console and network while Geovo moves the location (WebKit: enabling Web Inspector).
• Windows. Safari's Web Inspector needs a Mac, but you can still drive the location from Geovo for Windows and log positions to the page itself (for example, print `coords.latitude`, `coords.longitude` and `coords.accuracy` in a small debug panel).
• Other browsers on the iPhone. Each browser app has its own entry in Location Services, so allow location for the one you're testing.
• Web views in your own app. A page inside an app's web view asks for location through that app, so the app needs its own location permission. Geovo's location applies there too, which helps when you test a hybrid app.

What a simulated GPS location doesn't change

Geovo changes the GPS position only. It doesn't change the iPhone's IP address, time zone or language. If your site picks a region from the visitor's IP (currency, a country redirect, a cookie banner variant), that still follows the real network, so test it with your backend's own overrides or a staging flag. This split is useful: you can check that your page prefers the browser's location when the user shares it, and falls back sensibly when they don't.

Also remember that apps can ask iOS whether a location was simulated by software (CLLocationSourceInformation); web pages don't get that signal, but native parts of a hybrid app can.

Make it repeatable for your team

• Favorites for each test city or service-area edge, so every tester uses the same points.
• GPX export of a route you drew, committed next to your tests, to replay the same path every run.
• Session track export to attach exactly what the iPhone was told to a bug report.
• On the iPhone itself: testers can install the Geovo iPhone app and change location with nothing plugged in, on Wi-Fi or cellular (how it works).

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Use it responsibly

Geovo is for lawful use only: testing apps and websites, keeping your exact position private from an app that doesn't need it, demos, travel planning and teaching how location services work. Don't use any location tool to mislead people who rely on your location, or to break the terms of an app or service you've agreed to. Stop simulating whenever your real location matters, for example in an emergency.