为了防止滥用，firebase电话身份验证无法在模拟器中工作.

In order to prevent abuse the firebase phone authentication wont work in emulator.

但是，如果您希望将其用于测试目的，则应添加一些 在Firebase控制台中测试可以在模拟器中使用的电话号码.

But if you want it for testing purpose then you should add use some testing phone number in firebase console that will work in emulator.

转到您的Firebase控制台->身份验证->登录方法->电话，然后检查用于测试的电话号码(可选)"字段.

Go to your firebase console -> Authentication -> SIGN-IN Method -> Phone and check the "Phone numbers for testing (optional)" field.