diff --git a/src/routes/console/project-[project]/auth/user-[user]/updatePhone.svelte b/src/routes/console/project-[project]/auth/user-[user]/updatePhone.svelte
index baeeaea18..83500077b 100644
--- a/src/routes/console/project-[project]/auth/user-[user]/updatePhone.svelte
+++ b/src/routes/console/project-[project]/auth/user-[user]/updatePhone.svelte
@@ -36,6 +36,11 @@
 <Form onSubmit={updatePhone}>
     <CardGrid>
         <Heading tag="h6" size="7">Phone</Heading>
+        <p>
+            Update user's phone. A phone number must contain <b
+                >leading '+' and maximum of 15 digits</b
+            >.
+        </p>
         <svelte:fragment slot="aside">
             <ul>
                 <InputPhone