I downloaded Pokemon Go 10 days ago and I caught my starter pokemon. After that the application gave me the following error message:"GPS signal not found" and the map won't load, so I just stand in a blue screen.
Some of my friends have the "GPS signal not found" error message too and suggested I download GPS enhancing apps. At first the GPS enhancing apps didn't work, but after I deleted and reinstalled my Pokemon Go app it works normally. Now Pokemon Go still showing "GPS signal not found" with a blue screen instead of a map of the area I am in.
I've tried downloading the offline maps, but that just didn't work.