How to stop Instant verification in phone number verfication

[chitrey]

The phone authentication in firebase has two types of users on successful authentication as provided in the documentation:

Instant verification: in some cases the phone number can be instantly verified without needing to send or enter a verification code.

Auto-retrieval: on some devices, Google Play services can automatically detect the incoming verification SMS and perform verification without user action.

I would like to authenticate the users on the basis of sending SMS instead. So how could it be resolved. I would like to stop instant verification as well as auto retrieval and call the onCodeSent callback each time

Any help would be appreciated.

[samtstern]

@chitrey we don't currently have a way to disable the instant verification or auto retrieval. Both of those are based on SMS though, can you explain why you'd want to turn them off? In our user studies they greatly increase sign up conversion rate.

[samtstern]

Closing this issue as we are not planning to allow disabling this feature for now.

[Barackos]

@samtstern A good reason to allow disabling this feature is for debugging. I cannot recreate the call for "onCodeSent" anymore because of the Instant Verification, which makes it impossible for me to debug my "Enter your verification code" screen anymore. I tried uninstalling the app / removing its data and nothing helps. At least for debugging purposes, we have to have this option. Am I missing something here?

[samtstern]

@Barackos that's a good point. I'll make sure to add that to the feature request internally. One workaround is to use two devices. One one device (with no SIM) enter the phone number of the other device (with a SIM). Then you'll get the code flow.

[Aswindev]

Please make a way to disable instant verification, its a pain while debugging.

p.s. I wasted last 2 hours thinking i messed up my perfectly working program :(
Thank you for this thread, or i would've gone mad thinking it was my fault.

[McLeroy]

After verifying the code

PhoneAuthProvider.getCredential(verificationId,code);

onVerificationCompleted is never called. Why?

[samtstern]

onVerificationCompleted is only called when instant verification or auto-retrieval occurs.

[grrrian]

I'm interested in disabling instant verification for this reason: https://stackoverflow.com/q/45356169/3889068

[samtstern]

Looks like @isaisachen replied on StackOverflow.

[Jitesh291]

You can go to settings and disable you sim card. Enable it again and you should start getting verification codes. Though for instant verification I have not come across any way to disable that.

[isaisachen]

@Jitesh291 I'm confused. "disable your sim card... start getting verification codes" - so I assume it worked for you and you no longer got instant verification? And then what does your last sentence mean? You mean SMS auto-retrieval?

[Jitesh291]

@isaisachen Thing is when you try this for the first time you will get the otp code from Google but the next time you try it, it can cause instant verification to get active. So if you are debugging and having problem with not receiving otp code from google just disable your sim card and enable it again. This will help you in getting the otp codes from google again for one more time until you enter your code and instant verification gets activated again. Please note: I don't think there is any way you can disable instant verification as of now. But you can always optimize your code in a way it doesn't create any problem for you and your users.

[andersu]

Having the same problem, making it hard to debug the input screen. +1 for the feature request.

[0mar-ahmed]

I tried to pass 0 to timeout parameter in verifyPhoneNumber

docs says:
the maximum amount of time you are willing to wait for SMS auto-retrieval to be completed by the library. Maximum allowed value is 2 minutes. Use 0 to disable SMS-auto-retrieval. If you specifies a positive value less than 30 seconds, library will default to 30 seconds.

i've done that but nothing happened