您可以使用Firebase发送短信验证，而您不能通过Firebase发送普通短信.您可以改用Twilio发送.

You can send SMS Verification using Firebase and you cannot send ordinary SMS through Firebase. You can send using Twilio instead.

即使是SMS验证，您也必须等到他们发布用于通过Android进行SMS验证的API文档. https://firebase.google.com/docs/auth/android/phone-auth

Even for SMS verification, you have to wait until they release the API docs for SMS verification through Android. https://firebase.google.com/docs/auth/android/phone-auth