How to Turn On Location Services on iPhone
You'll find Location Services in your iPhone's Settings:
1. Tap Settings > Privacy
2. Tap Location Services.
3. Move the Location Services slider to on/green. Location Services are now on. Apps that need them can start accessing your location right away.
How to Turn On Location Services on Android
Location Services are turned on during the setup of your Android device, but you can also turn them on later by doing this:
1. Tap Settings > Location.
2. Move the slider to On.