Ionic3 ionic native google maps doesn't show map but only google logo (display grey blank map )

Question

Update

Thanks for the answer of wf9a5m75. I had a concept misunderststand on the API Keys. The Android and IOS API Key are generated from Go

Answer 1

Gray map is always api key problem. https://github.com/mapsplugin/cordova-plugin-googlemaps-doc/blob/master/v2.3.0/api_key/README.md