[firebase_auth]: Can't use verifyPhoneNumber before updating the phone number?

[LeonardoRosaa]

Is there an existing issue for this?

• I have searched the existing issues.

Which plugins are affected?

Auth

Which platforms are affected?

Android, iOS

Description

I aim to validate the new user’s phone number using FirebaseAuth.instance.verifyPhoneNumber before updating the phone number. However, I encountered the issue below using the FirebaseAuth.instance.verifyPhoneNumber method while the user authenticated has already linked a phone number.

Reproducing the issue

1. Stay authenticated with a user linked with a phone number;
2. Use the FirebaseAuth.instance.verifyPhoneNumber method with a new phone number.

Firebase Core version

2.29.0

Flutter Version

3.19.5

Relevant Log Output

[firebase_auth/provider-already-linked] [ERROR_PROVIDER_ALREADY_LINKED] - User can only be linked to one identity for the given provider

Flutter dependencies

Expand Flutter dependencies snippet

- amplitude_flutter 3.16.2 [flutter flutter_web_plugins js]
- async 2.11.0 [collection meta]
- auto_size_text_field 2.2.3 [flutter]
- birthday 1.0.0 [clock equatable meta]
- cloud_firestore 4.17.2 [cloud_firestore_platform_interface cloud_firestore_web collection firebase_core firebase_core_platform_interface flutter meta]
- collection 1.18.0
- connectivity_plus 6.0.3 [flutter flutter_web_plugins connectivity_plus_platform_interface web meta nm collection]
- contacts_service 0.6.3 [flutter collection quiver]
- cpf_cnpj_validator 2.0.0 [flutter flutter_test]
- dart_ipify 1.1.1 [http]
- dartz 0.10.1
- decimal 2.3.3 [rational]
- device_details 0.0.1 [dart_ipify device_info_plus equatable flutter]
- device_info_plus 10.1.0 [device_info_plus_platform_interface ffi file flutter flutter_web_plugins meta web win32 win32_registry]
- diacritic 0.1.5
- dimensiones 0.0.1 [flutter]
- dio 5.4.3+1 [async http_parser meta path]
- dotted_border 2.1.0 [flutter path_drawing]
- equatable 2.0.5 [collection meta]
- expand_tap_area 1.1.1 [flutter]
- figma_squircle 0.5.3 [vector_math flutter]
- file_picker 8.0.3 [flutter flutter_web_plugins flutter_plugin_android_lifecycle plugin_platform_interface ffi path win32 cross_file web]
- firebase 9.0.3 [http http_parser js]
- firebase_analytics 10.10.4 [firebase_analytics_platform_interface firebase_analytics_web firebase_core firebase_core_platform_interface flutter]
- firebase_auth 4.19.4 [firebase_auth_platform_interface firebase_auth_web firebase_core firebase_core_platform_interface flutter meta]
- firebase_core 2.30.1 [firebase_core_platform_interface firebase_core_web flutter meta]
- firebase_messaging 14.9.1 [firebase_core firebase_core_platform_interface firebase_messaging_platform_interface firebase_messaging_web flutter meta]
- firebase_performance 0.9.4+4 [firebase_core firebase_core_platform_interface firebase_performance_platform_interface firebase_performance_web flutter]
- firebase_remote_config 4.4.4 [firebase_core firebase_core_platform_interface firebase_remote_config_platform_interface firebase_remote_config_web flutter]
- firebase_storage 11.7.4 [firebase_core firebase_core_platform_interface firebase_storage_platform_interface firebase_storage_web flutter]
- fl_chart 0.67.0 [equatable flutter]
- flap 0.0.2 [flutter meta theme]
- flutter 0.0.0 [characters collection material_color_utilities meta vector_math sky_engine]
- flutter_keyboard_visibility 6.0.0 [meta flutter_keyboard_visibility_platform_interface flutter_keyboard_visibility_linux flutter_keyboard_visibility_macos flutter_keyboard_visibility_web flutter_keyboard_visibility_windows flutter]
- flutter_local_notifications 17.1.2 [clock flutter flutter_local_notifications_linux flutter_local_notifications_platform_interface timezone]
- flutter_localizations 0.0.0 [flutter intl characters clock collection material_color_utilities meta path vector_math]
- flutter_pdfview 1.3.2 [flutter]
- flutter_riverpod 2.5.1 [collection flutter meta riverpod state_notifier]
- flutter_svg 2.0.10+1 [flutter http vector_graphics vector_graphics_codec vector_graphics_compiler]
- formz 0.7.0 [meta]
- gap 3.0.1 [flutter]
- google_maps_webservice 0.0.20-nullsafety.5 [http meta json_annotation]
- http 0.13.6 [async http_parser meta]
- intl 0.18.1 [clock meta path]
- kiyibodi 0.0.2 [flutter theme]
- launch_review 3.0.1 [flutter]
- local_auth 2.2.0 [flutter local_auth_android local_auth_darwin local_auth_platform_interface local_auth_windows]
- logbook 0.0.1 [flutter logger meta sentry_flutter]
- lottie 3.1.0 [archive flutter http path vector_math]
- mask_text_input_formatter 2.9.0 [flutter]
- meta 1.11.0
- money2 4.0.0 [decimal fixed intl meta]
- onfido_sdk 6.0.0 [flutter plugin_platform_interface]
- open_mail_app 0.4.5 [platform url_launcher flutter]
- open_settings 2.0.2 [flutter]
- package_info_plus 7.0.0 [ffi flutter flutter_web_plugins http meta path package_info_plus_platform_interface web win32 clock]
- page_view_indicators 2.0.0 [flutter]
- path_provider 2.1.3 [flutter path_provider_android path_provider_foundation path_provider_linux path_provider_platform_interface path_provider_windows]
- permission_handler 11.3.1 [flutter meta permission_handler_android permission_handler_apple permission_handler_html permission_handler_windows permission_handler_platform_interface]
- platform_maps_flutter 1.0.2 [flutter google_maps_flutter google_maps_flutter_platform_interface apple_maps_flutter]
- provider 6.1.2 [collection flutter nested]
- retry 3.1.2
- riverpod 2.5.1 [collection meta stack_trace state_notifier]
- riverpod_annotation 2.3.5 [meta riverpod]
- riverpod_generator 2.4.0 [analyzer build build_config collection crypto meta path riverpod_analyzer_utils riverpod_annotation source_gen]
- rxdart 0.27.7
- sanationes 0.0.3 [equatable]
- secrete 0.0.1 [flutter plugin_platform_interface]
- share_plus 9.0.0 [cross_file meta mime flutter flutter_web_plugins share_plus_platform_interface file url_launcher_web url_launcher_windows url_launcher_linux url_launcher_platform_interface ffi web win32]
- shared_preferences 2.2.3 [flutter shared_preferences_android shared_preferences_foundation shared_preferences_linux shared_preferences_platform_interface shared_preferences_web shared_preferences_windows]
- shimmer 3.0.0 [flutter]
- string_capitalize 0.0.10
- theme 0.0.1 [equatable flutter gap]
- uni_links 0.5.1 [flutter uni_links_platform_interface uni_links_web]
- url_launcher 6.2.6 [flutter url_launcher_android url_launcher_ios url_launcher_linux url_launcher_macos url_launcher_platform_interface url_launcher_web url_launcher_windows]
- webview_flutter 4.7.0 [flutter webview_flutter_android webview_flutter_platform_interface webview_flutter_wkwebview]

dev dependencies:
- alchemist 0.7.0 [equatable flutter flutter_test meta path universal_io]
- build_runner 2.4.9 [analyzer args async build build_config build_daemon build_resolvers build_runner_core code_builder collection crypto dart_style frontend_server_client glob graphs http_multi_server io js logging meta mime package_config path pool pub_semver pubspec_parse shelf shelf_web_socket stack_trace stream_transform timing watcher web_socket_channel yaml]
- dart_code_metrics 5.7.6 [analyzer analyzer_plugin ansicolor args collection crypto dart_code_metrics_presets file glob html http meta path platform pub_updater source_span uuid xml yaml]
- fake_cloud_firestore 2.5.1 [flutter cloud_firestore cloud_firestore_platform_interface collection plugin_platform_interface quiver rxdart mock_exceptions fake_firebase_security_rules rx equatable clock]
- faker 2.1.0 [crypto]
- flutter_gen_runner 5.4.0 [flutter_gen_core build collection crypto glob path]
- flutter_lints 3.0.2 [lints]
- flutter_test 0.0.0 [flutter test_api matcher path fake_async clock stack_trace vector_math leak_tracker_flutter_testing async boolean_selector characters collection leak_tracker leak_tracker_testing material_color_utilities meta source_span stream_channel string_scanner term_glyph vm_service]
- glados 1.1.7 [characters meta test]
- mocktail 1.0.3 [collection matcher test_api]
- mocktailx 0.0.7 [mocktail]

dependency overrides:
- http 0.13.6 [async http_parser meta]

transitive dependencies:
- _fe_analyzer_shared 61.0.0 [meta]
- _flutterfire_internals 1.3.32 [collection firebase_core firebase_core_platform_interface flutter meta]
- analyzer 5.13.0 [_fe_analyzer_shared collection convert crypto glob meta package_config path pub_semver source_span watcher yaml]
- analyzer_plugin 0.11.2 [analyzer collection dart_style pub_semver yaml]
- ansicolor 2.0.2
- antlr4 4.13.1 [logging collection]
- apple_maps_flutter 1.3.0 [flutter]
- archive 3.5.1 [crypto path]
- args 2.5.0
- boolean_selector 2.1.1 [source_span string_scanner]
- build 2.4.1 [analyzer async convert crypto glob logging meta package_config path]
- build_config 1.1.1 [checked_yaml json_annotation path pubspec_parse yaml]
- build_daemon 4.0.1 [built_collection built_value crypto http_multi_server logging path pool shelf shelf_web_socket stream_transform watcher web_socket_channel]
- build_resolvers 2.4.2 [analyzer async build collection convert crypto graphs logging package_config path pool pub_semver stream_transform yaml]
- build_runner_core 7.3.0 [async build build_config build_resolvers collection convert crypto glob graphs json_annotation logging meta package_config path pool timing watcher yaml]
- built_collection 5.1.1
- built_value 8.9.2 [built_collection collection fixnum meta]
- cel 0.5.3 [antlr4 collection equatable]
- characters 1.3.0
- checked_yaml 2.0.3 [json_annotation source_span yaml]
- clock 1.1.1
- cloud_firestore_platform_interface 6.2.2 [_flutterfire_internals collection firebase_core flutter meta plugin_platform_interface]
- cloud_firestore_web 3.12.2 [_flutterfire_internals cloud_firestore_platform_interface collection firebase_core firebase_core_web flutter flutter_web_plugins]
- code_builder 4.10.0 [built_collection built_value collection matcher meta]
- color 3.0.0
- connectivity_plus_platform_interface 2.0.0 [flutter meta plugin_platform_interface]
- convert 3.1.1 [typed_data]
- coverage 1.8.0 [args logging package_config path source_maps stack_trace vm_service]
- cross_file 0.3.4+1 [meta web]
- crypto 3.0.3 [typed_data]
- csslib 1.0.0 [source_span]
- custom_lint_core 0.6.3 [analyzer analyzer_plugin collection glob matcher meta package_config path pubspec_parse source_span yaml]
- dart_code_metrics_presets 1.8.0
- dart_style 2.3.2 [analyzer args path pub_semver source_span]
- dartx 1.2.0 [characters collection crypto meta path time]
- dbus 0.7.10 [args ffi meta xml]
- device_info_plus_platform_interface 7.0.0 [flutter meta plugin_platform_interface]
- fake_async 1.3.1 [clock collection]
- fake_firebase_security_rules 0.5.3 [antlr4 cel equatable logger tuple]
- ffi 2.1.2
- file 6.1.4 [meta path]
- firebase_analytics_platform_interface 3.10.5 [_flutterfire_internals firebase_core flutter meta plugin_platform_interface]
- firebase_analytics_web 0.5.7+4 [_flutterfire_internals firebase_analytics_platform_interface firebase_core firebase_core_web flutter flutter_web_plugins]
- firebase_auth_platform_interface 7.2.5 [_flutterfire_internals collection firebase_core flutter meta plugin_platform_interface]
- firebase_auth_web 5.11.4 [firebase_auth_platform_interface firebase_core firebase_core_web flutter flutter_web_plugins http_parser meta web]
- firebase_core_platform_interface 5.0.0 [collection flutter flutter_test meta plugin_platform_interface]
- firebase_core_web 2.16.0 [firebase_core_platform_interface flutter flutter_web_plugins meta web]
- firebase_messaging_platform_interface 4.5.34 [_flutterfire_internals firebase_core flutter meta plugin_platform_interface]
- firebase_messaging_web 3.8.4 [_flutterfire_internals firebase_core firebase_core_web firebase_messaging_platform_interface flutter flutter_web_plugins meta web]
- firebase_performance_platform_interface 0.1.4+32 [_flutterfire_internals firebase_core flutter plugin_platform_interface]
- firebase_performance_web 0.1.6+4 [_flutterfire_internals firebase_core firebase_core_web firebase_performance_platform_interface flutter flutter_web_plugins]
- firebase_remote_config_platform_interface 1.4.32 [_flutterfire_internals firebase_core flutter meta plugin_platform_interface]
- firebase_remote_config_web 1.6.4 [firebase_core firebase_core_web firebase_remote_config_platform_interface flutter flutter_web_plugins]
- firebase_storage_platform_interface 5.1.19 [_flutterfire_internals collection firebase_core flutter meta plugin_platform_interface]
- firebase_storage_web 3.9.4 [_flutterfire_internals async firebase_core firebase_core_web firebase_storage_platform_interface flutter flutter_web_plugins http meta web]
- fixed 4.0.1 [decimal intl meta]
- fixnum 1.1.0
- flutter_gen_core 5.4.0 [path yaml mime xml dartx color collection json_annotation glob dart_style args pub_semver]
- flutter_keyboard_visibility_linux 1.0.0 [flutter_keyboard_visibility_platform_interface flutter]
- flutter_keyboard_visibility_macos 1.0.0 [flutter_keyboard_visibility_platform_interface flutter]
- flutter_keyboard_visibility_platform_interface 2.0.0 [flutter meta plugin_platform_interface]
- flutter_keyboard_visibility_web 2.0.0 [flutter_keyboard_visibility_platform_interface flutter_web_plugins flutter]
- flutter_keyboard_visibility_windows 1.0.0 [flutter_keyboard_visibility_platform_interface flutter]
- flutter_local_notifications_linux 4.0.0+1 [dbus ffi flutter flutter_local_notifications_platform_interface path xdg_directories]
- flutter_local_notifications_platform_interface 7.1.0 [flutter plugin_platform_interface]
- flutter_plugin_android_lifecycle 2.0.19 [flutter]
- flutter_web_plugins 0.0.0 [flutter characters collection material_color_utilities meta vector_math]
- freezed_annotation 2.4.1 [collection json_annotation meta]
- frontend_server_client 3.2.0 [async path]
- glob 2.1.2 [async collection file path string_scanner]
- google_maps 7.1.0 [js js_wrapping meta web]
- google_maps_flutter 2.6.1 [flutter google_maps_flutter_android google_maps_flutter_ios google_maps_flutter_platform_interface google_maps_flutter_web]
- google_maps_flutter_android 2.8.0 [flutter flutter_plugin_android_lifecycle google_maps_flutter_platform_interface stream_transform]
- google_maps_flutter_ios 2.6.0 [flutter google_maps_flutter_platform_interface stream_transform]
- google_maps_flutter_platform_interface 2.6.0 [collection flutter plugin_platform_interface stream_transform]
- google_maps_flutter_web 0.5.7 [collection flutter flutter_web_plugins google_maps google_maps_flutter_platform_interface sanitize_html stream_transform web]
- graphs 2.3.1 [collection]
- html 0.15.4 [csslib source_span]
- http_multi_server 3.2.1 [async]
- http_parser 4.0.2 [collection source_span string_scanner typed_data]
- io 1.0.4 [meta path string_scanner]
- js 0.6.7 [meta]
- js_wrapping 0.7.4 [js]
- json_annotation 4.9.0 [meta]
- leak_tracker 10.0.0 [clock collection meta path vm_service]
- leak_tracker_flutter_testing 2.0.1 [flutter leak_tracker leak_tracker_testing matcher meta]
- leak_tracker_testing 2.0.1 [leak_tracker matcher meta]
- lints 3.0.0
- local_auth_android 1.0.38 [flutter flutter_plugin_android_lifecycle intl local_auth_platform_interface]
- local_auth_darwin 1.2.2 [flutter intl local_auth_platform_interface]
- local_auth_platform_interface 1.0.10 [flutter plugin_platform_interface]
- local_auth_windows 1.0.10 [flutter local_auth_platform_interface]
- logger 2.2.0
- logging 1.2.0
- matcher 0.12.16+1 [async meta stack_trace term_glyph test_api]
- material_color_utilities 0.8.0 [collection]
- mime 1.0.5
- mock_exceptions 0.8.2 [matcher]
- more 4.2.0 [characters clock collection meta]
- nested 1.0.0 [flutter]
- nm 0.5.0 [dbus]
- node_preamble 2.0.2
- package_config 2.1.0 [path]
- package_info_plus_platform_interface 3.0.0 [flutter meta plugin_platform_interface]
- path 1.9.0
- path_drawing 1.0.1 [vector_math meta path_parsing flutter]
- path_parsing 1.0.1 [vector_math meta]
- path_provider_android 2.2.4 [flutter path_provider_platform_interface]
- path_provider_foundation 2.3.2 [flutter path_provider_platform_interface]
- path_provider_linux 2.2.1 [ffi flutter path path_provider_platform_interface xdg_directories]
- path_provider_platform_interface 2.1.2 [flutter platform plugin_platform_interface]
- path_provider_windows 2.2.1 [ffi flutter path path_provider_platform_interface win32]
- permission_handler_android 12.0.6 [flutter permission_handler_platform_interface]
- permission_handler_apple 9.4.4 [flutter permission_handler_platform_interface]
- permission_handler_html 0.1.1 [flutter flutter_web_plugins permission_handler_platform_interface]
- permission_handler_platform_interface 4.2.1 [flutter meta plugin_platform_interface]
- permission_handler_windows 0.2.1 [flutter permission_handler_platform_interface]
- petitparser 6.0.2 [meta]
- platform 3.1.4
- plugin_platform_interface 2.1.8 [meta]
- pool 1.5.1 [async stack_trace]
- process 4.2.4 [file path platform]
- pub_semver 2.1.4 [collection meta]
- pub_updater 0.3.1 [http json_annotation process pub_semver]
- pubspec_parse 1.2.3 [checked_yaml collection json_annotation pub_semver yaml]
- quiver 3.2.1 [matcher]
- rational 2.2.2
- riverpod_analyzer_utils 0.5.1 [analyzer collection crypto custom_lint_core freezed_annotation meta path source_span]
- rx 0.4.0 [collection matcher meta more]
- sanitize_html 2.1.0 [html meta]
- sentry 8.1.0 [http meta stack_trace uuid]
- sentry_flutter 8.1.0 [flutter flutter_web_plugins sentry package_info_plus meta ffi]
- share_plus_platform_interface 4.0.0 [cross_file flutter meta mime plugin_platform_interface path_provider uuid]
- shared_preferences_android 2.2.2 [flutter shared_preferences_platform_interface]
- shared_preferences_foundation 2.4.0 [flutter shared_preferences_platform_interface]
- shared_preferences_linux 2.3.2 [file flutter path path_provider_linux path_provider_platform_interface shared_preferences_platform_interface]
- shared_preferences_platform_interface 2.3.2 [flutter plugin_platform_interface]
- shared_preferences_web 2.3.0 [flutter flutter_web_plugins shared_preferences_platform_interface web]
- shared_preferences_windows 2.3.2 [file flutter path path_provider_platform_interface path_provider_windows shared_preferences_platform_interface]
- shelf 1.4.1 [async collection http_parser path stack_trace stream_channel]
- shelf_packages_handler 3.0.2 [path shelf shelf_static]
- shelf_static 1.1.2 [convert http_parser mime path shelf]
- shelf_web_socket 1.0.4 [shelf stream_channel web_socket_channel]
- sky_engine 0.0.99
- source_gen 1.5.0 [analyzer async build dart_style glob path source_span yaml]
- source_map_stack_trace 2.1.1 [path source_maps stack_trace]
- source_maps 0.10.12 [source_span]
- source_span 1.10.0 [collection path term_glyph]
- stack_trace 1.11.1 [path]
- state_notifier 1.0.0 [meta]
- stream_channel 2.1.2 [async]
- stream_transform 2.1.0
- string_scanner 1.2.0 [source_span]
- term_glyph 1.2.1
- test 1.24.9 [analyzer async boolean_selector collection coverage http_multi_server io js matcher node_preamble package_config path pool shelf shelf_packages_handler shelf_static shelf_web_socket source_span stack_trace stream_channel test_api test_core typed_data web_socket_channel webkit_inspection_protocol yaml]
- test_api 0.6.1 [async boolean_selector collection meta source_span stack_trace stream_channel string_scanner term_glyph]
- test_core 0.5.9 [analyzer args async boolean_selector collection coverage frontend_server_client glob io meta package_config path pool source_map_stack_trace source_maps source_span stack_trace stream_channel test_api vm_service yaml]
- time 2.1.4 [clock]
- timezone 0.9.3 [path]
- timing 1.0.1 [json_annotation]
- tuple 2.0.2
- typed_data 1.3.2 [collection]
- uni_links_platform_interface 1.0.0 [flutter plugin_platform_interface]
- uni_links_web 0.1.0 [flutter flutter_web_plugins uni_links_platform_interface]
- universal_io 2.2.2 [collection meta typed_data]
- url_launcher_android 6.3.1 [flutter url_launcher_platform_interface]
- url_launcher_ios 6.2.5 [flutter url_launcher_platform_interface]
- url_launcher_linux 3.1.1 [flutter url_launcher_platform_interface]
- url_launcher_macos 3.1.0 [flutter url_launcher_platform_interface]
- url_launcher_platform_interface 2.3.2 [flutter plugin_platform_interface]
- url_launcher_web 2.3.1 [flutter flutter_web_plugins url_launcher_platform_interface web]
- url_launcher_windows 3.1.1 [flutter url_launcher_platform_interface]
- uuid 3.0.7 [crypto]
- vector_graphics 1.1.11+1 [flutter http vector_graphics_codec]
- vector_graphics_codec 1.1.11+1
- vector_graphics_compiler 1.1.11+1 [args meta path_parsing xml vector_graphics_codec path]
- vector_math 2.1.4
- vm_service 13.0.0
- watcher 1.1.0 [async path]
- web 0.5.1
- web_socket_channel 2.4.5 [async crypto stream_channel web]
- webkit_inspection_protocol 1.2.1 [logging]
- webview_flutter_android 3.16.1 [flutter webview_flutter_platform_interface]
- webview_flutter_platform_interface 2.10.0 [flutter meta plugin_platform_interface]
- webview_flutter_wkwebview 3.13.0 [flutter path webview_flutter_platform_interface]
- win32 5.5.0 [ffi]
- win32_registry 1.1.3 [ffi win32]
- xdg_directories 1.0.4 [meta path]
- xml 6.5.0 [collection meta petitparser]
- yaml 3.1.2 [collection source_span string_scanner]

Additional context and comments

I would like to understand how I could verify the new user’s phone number before updating it.

[TarekkMA]

Hello @LeonardoRosaa, thank you for reporting this issue. Could you please provide more details on how I can reproduce it? It would be great if you could also provide a minimal reproduction example where this issue occurs.

[LeonardoRosaa]

Hello @LeonardoRosaa, thank you for reporting this issue. Could you please provide more details on how I can reproduce it? It would be great if you could also provide a minimal reproduction example where this issue occurs.

Since there is an error in my flow I will close this issue.