diff --git a/README.md b/README.md
index 6cb0bb497cc5687a038f9b3da12c82b46943467b..2ca08895c04f26653ce498c9a5bd187f360b6f1b 100644
--- a/README.md
+++ b/README.md
@@ -178,3 +178,9 @@ post_install do |installer|
   end
 end
 ```
+
+Note:
+the device type enumeration does not include the telephony field and is not supported at this time.
+
+注意：
+设备类型枚举没有telephony字段，且暂无支持。
\ No newline at end of file