Android app is crashing due to V/GoogleSignatureVerifier: Signature not valid

Question

I have an android app in which I am using Google Maps API for Android v2. It was working fine in my phone until I upgraded my phone to Marshmallow. After updating my phone o

Answer 1

I had the same issue recently. What caused it for me was when the phone auto updated Google Play Services to version 9.0.83.

The only solution I found was uninstalling the update and allowing Google Play services to re-update.

To remove the update: Settings > Apps > Google Play services > Hit the three dots and uninstall updates. Then reinstall the updates through the play store.

Start the app and it should ask you to upgrade your Google Play services.

The version was originally 9.0.83 after doing these steps it downgraded to 8.7.03.

I don't feel like this is a solution since I have a few people testing my app and a few of them are having the same issue (the ones on version 9.0.83). I'm not too sure what changed with 9.0.83