What May The Reason Of Change In App Signature Even I Used The Same Keystore For Android App

I have published an app at Play Store. Now i made some changes in my application and used the same key store with key alias and key password to generate signed apk with new versio

Solution 1:

Compare the certificates of both the apk's by using below commands.

keytool -list -printcert -jarfile app.apk

If its not same then you might have missed something

Solution 2:

I had exactly the same issue. I kept looking and couldn't solve it. Then finally I found the answer. I searched for all the apk's ever generated by me and then put all of them, one by one, on an online apk signature verifying site.

Fortunately, one of the apk had the same signature as the one displayed on developer console in error. So I went to that apk's folder and took the .jks file and signed my apk with that .jks.

This resolved the issue. I would say that you must have used keys of any of your other app mistakenly instead of the one which are in the project folder. So go and check signatures of all your .jks files and see which ones match the required one.