If you cannot see a blue dot showing your current location it is likely that you have Location Services switched off.
To turn Location services on.
- Open your device's Settings app
- Tap Security & Location
- Turn Location on
You can choose your location mode based on accuracy, speed, and battery use.
Open your device's Settings app Settings app.
Tap Security & Location and then Location. (If you don't see "Security & Location," tap Location.)
Tap Mode. Then pick:
This mode uses GPS, Wi-Fi, mobile networks, and sensors to get the highest-accuracy location. It uses Google's Location services to help estimate your device's location faster and more accurately.
This mode uses sources that use less battery, like Wi-Fi and mobile networks. It uses Google's Location services to help estimate your device's location faster and more accurately.
This mode uses only GPS. It doesn’t use Google's Location services to provide location information. It can estimate your device's location slower and use more battery.
You can read more at Turn location on or off for your device