Iphonex uses high-tech map cards.

Because the GPS signal is weak, it can't be used normally. Try the following:

1, try to turn it off and on again;

2. Settings-(More/General)-Location Service (Location)-On, (Use GPS Satellite-Check);

3. The mobile phone supports the A-GPS function, so it is recommended to turn it on. Mode: Settings-(More/General)-Location Service (Location)-On (Using Wireless Network-Check)-(If A-GPS is turned on, it will consume traffic);

Try to search for more than three satellites when the weather is clear. It is impossible to navigate indoors. If you can't search for satellites outdoors, it may be related to the weather, location and buildings at that time.