On the third day, I am looking for a solution to this problem
Where is the error?
The app does not send any OTP messages
Can anyone tell me where the error could be? 
Did you import google-service.json?
@Victor_Ken Of course, this is an essential step that cannot be forgotten
In Firebase authentication, have you turned on the “Phone” option?
Even if the error appears, is your number registered in firebase?
No
App doesn’t send OTP for any number
I did some tests here and everything went fine with me, I just can’t print the code, but try to recreate a new project and try again
This blocks in the image that I uploaded for a test project (New project)
I noticed, but I created a test one too and with me it worked perfectly. It took a while because the signal here is weak, but I didn’t have any problems.
1 Like
Thank you for your time @Victor_Ken , but think with me where the problem could be
My mind is starting to stop 
Try to use an existing project, and see if the same error occurs. Sometimes the error can be in google-service.json too!
@Victor_Ken
All my projects stopped sending OTP , All of them
Projects was sending OTP without any problems it also stopped 
Same thing I am facing… all projects were sending OTP but now all are stopped
facing same issue! have you found out the solution?