diff --git a/src/KSFramework/Utilities/ValidationExtensions.cs b/src/KSFramework/Utilities/ValidationExtensions.cs
index ec1dd4c..e68a9a6 100644
--- a/src/KSFramework/Utilities/ValidationExtensions.cs
+++ b/src/KSFramework/Utilities/ValidationExtensions.cs
@@ -22,7 +22,7 @@ public static bool IsValidEmail(this string email)
 
     public static bool IsValidMobile(this string phone)
     {
-        return Regex.IsMatch(phone, @"(?:(?:\+|00)?\d{1,4})?[-\s\.]?(?:0)?\d{6,14}");
+        return Regex.IsMatch(phone, @"^(?:\+?\d{1,3}[.\-\s]?)?(?:\(0?\d{1,4}\)|0?\d{1,4})?[.\-\s]?\d{1,4}[.\-\s]?\d{1,9}$");
     }
 
 }
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