diff --git a/src/libs/LoginUtils.ts b/src/libs/LoginUtils.ts
index 8ee6d94952f8..2d49cb992717 100644
--- a/src/libs/LoginUtils.ts
+++ b/src/libs/LoginUtils.ts
@@ -40,7 +40,7 @@ function isEmailPublicDomain(email: string): boolean {
 function validateNumber(values: string): string {
     const parsedPhoneNumber = parsePhoneNumber(values);
 
-    if (parsedPhoneNumber.possible && Str.isValidPhone(values.slice(0))) {
+    if (parsedPhoneNumber.possible && Str.isValidE164Phone(values.slice(0))) {
         return `${parsedPhoneNumber.number?.e164}${CONST.SMS.DOMAIN}`;
     }
 
diff --git a/src/libs/OptionsListUtils.ts b/src/libs/OptionsListUtils.ts
index 9e1320e83abb..8508f5c284d5 100644
--- a/src/libs/OptionsListUtils.ts
+++ b/src/libs/OptionsListUtils.ts
@@ -1695,7 +1695,7 @@ function getOptions(
         !isCurrentUser({login: searchValue} as PersonalDetails) &&
         selectedOptions.every((option) => 'login' in option && option.login !== searchValue) &&
         ((Str.isValidEmail(searchValue) && !Str.isDomainEmail(searchValue) && !Str.endsWith(searchValue, CONST.SMS.DOMAIN)) ||
-            (parsedPhoneNumber.possible && Str.isValidPhone(LoginUtils.getPhoneNumberWithoutSpecialChars(parsedPhoneNumber.number?.input ?? '')))) &&
+            (parsedPhoneNumber.possible && Str.isValidE164Phone(LoginUtils.getPhoneNumberWithoutSpecialChars(parsedPhoneNumber.number?.input ?? '')))) &&
         !optionsToExclude.find((optionToExclude) => 'login' in optionToExclude && optionToExclude.login === PhoneNumber.addSMSDomainIfPhoneNumber(searchValue).toLowerCase()) &&
         (searchValue !== CONST.EMAIL.CHRONOS || Permissions.canUseChronos(betas)) &&
         !excludeUnknownUsers
diff --git a/src/libs/ReportUtils.ts b/src/libs/ReportUtils.ts
index 96c685d4185a..3e12a2db08d2 100644
--- a/src/libs/ReportUtils.ts
+++ b/src/libs/ReportUtils.ts
@@ -3036,7 +3036,7 @@ function getParsedComment(text: string): string {
                 return `@${mentionWithEmailDomain}`;
             }
         }
-        if (Str.isValidPhone(mention)) {
+        if (Str.isValidE164Phone(mention)) {
             const mentionWithSmsDomain = PhoneNumber.addSMSDomainIfPhoneNumber(mention);
             if (allPersonalDetailLogins.includes(mentionWithSmsDomain)) {
                 return `@${mentionWithSmsDomain}`;
diff --git a/src/libs/UserUtils.ts b/src/libs/UserUtils.ts
index 147343e99ceb..ce7e4963afc7 100644
--- a/src/libs/UserUtils.ts
+++ b/src/libs/UserUtils.ts
@@ -210,7 +210,7 @@ function getSmallSizeAvatar(avatarSource: AvatarSource, accountID?: number): Ava
  */
 function getSecondaryPhoneLogin(loginList: OnyxEntry<Login>): string | undefined {
     const parsedLoginList = Object.keys(loginList ?? {}).map((login) => Str.removeSMSDomain(login));
-    return parsedLoginList.find((login) => Str.isValidPhone(login));
+    return parsedLoginList.find((login) => Str.isValidE164Phone(login));
 }
 
 export {
diff --git a/src/libs/ValidationUtils.ts b/src/libs/ValidationUtils.ts
index cacab8333868..b1f6085f4538 100644
--- a/src/libs/ValidationUtils.ts
+++ b/src/libs/ValidationUtils.ts
@@ -284,7 +284,7 @@ function isValidUSPhone(phoneNumber = '', isCountryCodeOptional?: boolean): bool
 
     // When we pass regionCode as an option to parsePhoneNumber it wrongly assumes inputs like '=15123456789' as valid
     // so we need to check if it is a valid phone.
-    if (regionCode && !Str.isValidPhone(phone)) {
+    if (regionCode && !Str.isValidPhoneFormat(phone)) {
         return false;
     }