I have created an app with firebase phone Authentication with OTP verification, but it opens the external browser for verification of Recaptcha ,how can I disable the Recaptcha verification and stop the Authentication from opening external browser.
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You shoud Enable Android Device Verification
ADV
then add SHA256
in your Firebase Project and update your JSON

Ganesh MB
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I have done this but ,still it opens browser for recaptcha verification. How can I update JSON – Ashish Dawkhar Nov 11 '21 at 09:41
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FIrebase -> Project Settings -> google-services.json – Ganesh MB Nov 11 '21 at 09:45
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Yes, I have update json file but,still unable to solve problem opens browser for recaptcha verification. – Ashish Dawkhar Nov 11 '21 at 10:14
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If no luck try this FirebaseAuth.getInstance().getFirebaseAuthSettings().setAppVerificationDisabledForTesting(); – Ganesh MB Nov 11 '21 at 11:39
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Sir ,still not working I have tried this. – Ashish Dawkhar Nov 11 '21 at 14:31
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@AshishDawkhar Have you solved this? i'm having this problem in production and old android users cant enter my app. – john Feb 08 '23 at 13:35