diff --git a/src/libs/OptionsListUtils.js b/src/libs/OptionsListUtils.js
index 7e0aaa8ffb2f..7b68e572064d 100644
--- a/src/libs/OptionsListUtils.js
+++ b/src/libs/OptionsListUtils.js
@@ -1283,7 +1283,7 @@ function getOptions(
     if (includePersonalDetails) {
         // Next loop over all personal details removing any that are selectedUsers or recentChats
         _.each(allPersonalDetailsOptions, (personalDetailOption) => {
-            if (_.some(optionsToExclude, (optionToExclude) => optionToExclude.login === personalDetailOption.login)) {
+            if (_.some(optionsToExclude, (optionToExclude) => optionToExclude.login === addSMSDomainIfPhoneNumber(personalDetailOption.login))) {
                 return;
             }
             const {searchText, participantsList, isChatRoom} = personalDetailOption;
diff --git a/src/pages/RoomInvitePage.js b/src/pages/RoomInvitePage.js
index a1f7d22c3dc3..4bd61a251c53 100644
--- a/src/pages/RoomInvitePage.js
+++ b/src/pages/RoomInvitePage.js
@@ -71,7 +71,13 @@ function RoomInvitePage(props) {
     const [userToInvite, setUserToInvite] = useState(null);
 
     // Any existing participants and Expensify emails should not be eligible for invitation
-    const excludedUsers = useMemo(() => [...PersonalDetailsUtils.getLoginsByAccountIDs(lodashGet(props.report, 'participantAccountIDs', [])), ...CONST.EXPENSIFY_EMAILS], [props.report]);
+    const excludedUsers = useMemo(
+        () =>
+            _.map([...PersonalDetailsUtils.getLoginsByAccountIDs(lodashGet(props.report, 'participantAccountIDs', [])), ...CONST.EXPENSIFY_EMAILS], (participant) =>
+                OptionsListUtils.addSMSDomainIfPhoneNumber(participant),
+            ),
+        [props.report],
+    );
 
     useEffect(() => {
         // Kick the user out if they tried to navigate to this via the URL
@@ -190,7 +196,7 @@ function RoomInvitePage(props) {
         if (!userToInvite && CONST.EXPENSIFY_EMAILS.includes(searchValue)) {
             return translate('messages.errorMessageInvalidEmail');
         }
-        if (!userToInvite && excludedUsers.includes(searchValue)) {
+        if (!userToInvite && excludedUsers.includes(OptionsListUtils.addSMSDomainIfPhoneNumber(searchValue).toLowerCase())) {
             return translate('messages.userIsAlreadyMember', {login: searchValue, name: reportName});
         }
         return OptionsListUtils.getHeaderMessage(personalDetails.length !== 0, Boolean(userToInvite), searchValue);
diff --git a/src/pages/workspace/WorkspaceInvitePage.js b/src/pages/workspace/WorkspaceInvitePage.js
index 4bef69c82414..497890b9da25 100644
--- a/src/pages/workspace/WorkspaceInvitePage.js
+++ b/src/pages/workspace/WorkspaceInvitePage.js
@@ -220,7 +220,7 @@ function WorkspaceInvitePage(props) {
         if (usersToInvite.length === 0 && CONST.EXPENSIFY_EMAILS.includes(searchValue)) {
             return translate('messages.errorMessageInvalidEmail');
         }
-        if (usersToInvite.length === 0 && excludedUsers.includes(searchValue)) {
+        if (usersToInvite.length === 0 && excludedUsers.includes(OptionsListUtils.addSMSDomainIfPhoneNumber(searchValue))) {
             return translate('messages.userIsAlreadyMember', {login: searchValue, name: policyName});
         }
         return OptionsListUtils.getHeaderMessage(personalDetails.length !== 0, usersToInvite.length > 0, searchValue);