I have Google Maps in my Android App. I added it by selecting new Google Maps Activity & pasting the key in Android Studio. It worked fine in my Android phone (Lenovo K5
The debug.keystore is different from two computers.
Solutions:
1) Copy the keystore from the pc to new in Android folder.
2) Generate new sha and put in your google api's project. https://developers.google.com/maps/documentation/android-api/signup#release-cert