Pokémon GO allows you to see Pokémon and Gyms around you in real-time, so you can defeat or catch them to complete your Pokédex. But the app completely relies on your GPS location to work. If your Pokémon GO app is showing the GPS Signal Not Found (11) error, your game is rendered totally unplayable.
How to Fix the GPS Signal Not Found Error in Pokémon GO
Stuck with the GPS Signal Not Found (11) error in Pokémon GO? Here's how you can fix it and get back to hunting Pokémon.