Hi HENSLEYS_1999,
Thank you for posting to Apple Support Communities.
The location is determined by various features on your iPhone. This may be determined by the network you're currently connected to. Here's how to control which apps access your location:
1. Go to Settings > Privacy > Location Services.
2. Make sure that Location Services is on.
3. Scroll down to find the app.
4. Tap the app and select an option:
• Never: Prevents access to Location Services information.
• Ask Next Time: This allows you to choose Always While Using App, Allow Once, or Don't Allow.
• While Using the App: Allows access to Location Services only when the app or one of its features is visible on screen. If an app is set to While Using the App, you might see your status bar turn blue with a message that an app is actively using your location.
• Always: Allows access to your location even when the app is in the background.
From here, apps should provide an explanation of how the app will use your location information. Some apps might offer only two options.
This information is provided in Turn Location Services and GPS on or off on your iPhone, iPad, or iPod touch - Apple Support.
Take care.