SHA certificate firebase Debug/Release

Question

My android app is using firebase realtime Database, i've putted the app debug SHA certificate fingerprints , and when I test my app with debug mode it works and I get data from DB , now when I want to sign and release the app , " what i've done with my previous app : I delete the debug SHA certificate fingerprint from firebase project console and then I put the release SHA certificate fingerprint and the app is on the market now and it's OK" but I want to know :

Q1)when I deleted the debug SHA certificate fingerprint with the release one , it will still work when I run my app in debug mode ?

Q2) should i put debug and release SHA certificate fingerprint in the firebase console ?

Q3) If i put debug and release SHA certificate fingerprint in the firebase console then download the new configuration file provided from firebase , my database connexion will still work either on release and debug mode ?

Answer 1

Here are the answer to your questions.

1. It will work only if you still have the debug SHA certificate fingerprint for debug mode. Otherwise, it won't work.
2. Yes, you should put in your Firebase Console, both debug and release SHA certificate fingerprints.
3. Yes indeed, if you put the debug and release SHA certificate fingerprint in the Firebase Console and if you download the google-services.json file again and put it in the right place in your project, your database connection will still work either on release and debug mode.