• Check a SIM card balance and Internet. 
  • You can get an accurate information about the location of the smart watch only by GPS. 
  • Impossible to get GPS signal in the building. Location will be update by Wi-Fi access points or mobile network stations - the accuracy depends on the density of the mobile base stations. The highest density of stations — in the city center (location accuracy from 200 to 500 meters). On the outskirts of cities it can be 1500 – 2000 meters.

Below are the links that are related to this problem:

ELARI SafeFamily, location setting

The balance of voice call and Internet traffic on the SIM card. How to check?