diff --git a/.changeset/quiet-dancers-carry.md b/.changeset/quiet-dancers-carry.md
new file mode 100644
index 00000000000..06f2940098e
--- /dev/null
+++ b/.changeset/quiet-dancers-carry.md
@@ -0,0 +1,5 @@
+---
+'@clerk/ui': patch
+---
+
+fix(ui): don't treat numeric usernames as phone numbers
diff --git a/packages/ui/src/utils/__tests__/formatSafeIdentifier.test.ts b/packages/ui/src/utils/__tests__/formatSafeIdentifier.test.ts
index 4954ddea06c..ac114cafa01 100644
--- a/packages/ui/src/utils/__tests__/formatSafeIdentifier.test.ts
+++ b/packages/ui/src/utils/__tests__/formatSafeIdentifier.test.ts
@@ -8,6 +8,7 @@ describe('formatSafeIdentifier', () => {
     ['h***@***.com', 'h***@***.com'],
     ['username', 'username'],
     ['u***e', 'u***e'],
+    ['4245554242', '4245554242'],
     ['+71111111111', '+7 111 111-11-11'],
     ['+791*******1', '+791*******1'],
   ];
diff --git a/packages/ui/src/utils/formatSafeIdentifier.ts b/packages/ui/src/utils/formatSafeIdentifier.ts
index 2684f22f6f0..1e2fdfce433 100644
--- a/packages/ui/src/utils/formatSafeIdentifier.ts
+++ b/packages/ui/src/utils/formatSafeIdentifier.ts
@@ -8,7 +8,7 @@ export const isMaskedIdentifier = (str: string | undefined | null) => str && str
  * Refer to the tests for examples.
  */
 export const formatSafeIdentifier = (str: string | undefined | null) => {
-  if (!str || str.includes('@') || isMaskedIdentifier(str) || str.match(/[a-zA-Z]/)) {
+  if (!str || str.includes('@') || isMaskedIdentifier(str) || str.match(/[a-zA-Z]/) || !str.startsWith('+')) {
     return str;
   }
   return stringToFormattedPhoneString(str);