diff --git a/td/generate/scheme/td_api.tl b/td/generate/scheme/td_api.tl
index 78897c876..cd547f18f 100644
--- a/td/generate/scheme/td_api.tl
+++ b/td/generate/scheme/td_api.tl
@@ -4259,10 +4259,11 @@ firebaseAuthenticationSettingsIos device_token:string is_app_sandbox:Bool = Fire
 //@allow_flash_call Pass true if the authentication code may be sent via a flash call to the specified phone number
 //@allow_missed_call Pass true if the authentication code may be sent via a missed call to the specified phone number
 //@is_current_phone_number Pass true if the authenticated phone number is used on the current device
+//@has_unknown_phone_number Pass true if there is a SIM card in the current device, but it is not possible to check whether phone number matches
 //@allow_sms_retriever_api For 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_settings For official Android and iOS applications only; pass null otherwise. Settings for Firebase Authentication
 //@authentication_tokens List of up to 20 authentication tokens, recently received in updateOption("authentication_token") in previously logged out sessions
-phoneNumberAuthenticationSettings allow_flash_call:Bool allow_missed_call:Bool is_current_phone_number:Bool allow_sms_retriever_api:Bool firebase_authentication_settings:FirebaseAuthenticationSettings authentication_tokens:vector<string> = PhoneNumberAuthenticationSettings;
+phoneNumberAuthenticationSettings allow_flash_call:Bool allow_missed_call:Bool is_current_phone_number:Bool has_unknown_phone_number:Bool allow_sms_retriever_api:Bool firebase_authentication_settings:FirebaseAuthenticationSettings authentication_tokens:vector<string> = PhoneNumberAuthenticationSettings;
 
 
 //@description Represents a reaction applied to a message
diff --git a/td/telegram/SendCodeHelper.cpp b/td/telegram/SendCodeHelper.cpp
index dd87e56bb..eb7da12e0 100644
--- a/td/telegram/SendCodeHelper.cpp
+++ b/td/telegram/SendCodeHelper.cpp
@@ -62,6 +62,9 @@ telegram_api::object_ptr<telegram_api::codeSettings> SendCodeHelper::get_input_c
     if (settings->is_current_phone_number_) {
       flags |= telegram_api::codeSettings::CURRENT_NUMBER_MASK;
     }
+    if (settings->has_unknown_phone_number_) {
+      flags |= telegram_api::codeSettings::UNKNOWN_NUMBER_MASK;
+    }
     if (settings->allow_sms_retriever_api_) {
       flags |= telegram_api::codeSettings::ALLOW_APP_HASH_MASK;
     }
diff --git a/td/telegram/cli.cpp b/td/telegram/cli.cpp
index 726da3c26..57a34485a 100644
--- a/td/telegram/cli.cpp
+++ b/td/telegram/cli.cpp
@@ -2320,7 +2320,7 @@ class CliClient final : public Actor {
   }
 
   td_api::object_ptr<td_api::phoneNumberAuthenticationSettings> as_phone_number_authentication_settings() const {
-    return td_api::make_object<td_api::phoneNumberAuthenticationSettings>(false, true, false, false, nullptr,
+    return td_api::make_object<td_api::phoneNumberAuthenticationSettings>(false, true, false, false, false, nullptr,
                                                                           vector<string>(authentication_tokens_));
   }