View Source ExTDLib.Object.PhoneNumberAuthenticationSettings (ExTDLib v0.0.4)

Contains settings for the authentication of the user's phone number.

NameTypeDescription
allow_flash_callboolPass true if the authentication code may be sent via a flash call to the specified phone number.
allow_missed_callboolPass true if the authentication code may be sent via a missed call to the specified phone number.
is_current_phone_numberboolPass true if the authenticated phone number is used on the current device.
allow_sms_retriever_apiboolFor official applications only. True, if the application can use Android SMS Retriever API (requires Google Play Services >= 10.2) to automatically receive the authentication code from the SMS. See https://developers.google.com/identity/sms-retriever/ for more details.
firebase_authentication_settingsFirebaseAuthenticationSettingsFor official Android and iOS applications only; pass null otherwise. Settings for Firebase Authentication.
authentication_tokensstringList of up to 20 authentication tokens, recently received in updateOption("authentication_token") in previously logged out sessions.

More details on telegram's documentation.