diff --git a/DOES_IT_WORK.md b/DOES_IT_WORK.md
new file mode 100644
index 0000000..0c88d62
--- /dev/null
+++ b/DOES_IT_WORK.md
@@ -0,0 +1,10 @@
+## What shouldn't work:
+avatar on latest version of WeChat
+
+## Everything else works with the following phone/OS:
++ XiaoMi Mi 3W with android 4.4.4 (and some earlier versions)
+
+
+
+## What doesn't work:
++ Cannot get IMEI automatically with android 5.0 (see #9). You can obtain it manually.
diff --git a/README.md b/README.md
index 09ff247..ba65603 100644
--- a/README.md
+++ b/README.md
@@ -9,9 +9,12 @@ It can generate single-file html containing all the messages, including voice me
 
 __NEWS__: WeChat 6.0+ use silk to encode audio. The code is updated.
 
-The latest version of WeChat uses a new avatar storage. Currently I don't have time investigating that. You're expected to
+__NEWS__: The latest version of WeChat uses a new avatar storage. Currently I don't have time investigating that. You're expected to
 see generated htmls without avatars. Contributions welcomed!
 
+If this tools works for you, please take a moment to __add your phone/OS to__ [this file](https://github.com/ppwwyyxx/wechat-dump/blob/master/DOES_IT_WORK.md).
+If it doesn't work, please leave an issue together with your phone/OS/wechat version.
+
 ### How to use:
 
 #### Dependencies: