diff --git a/README.md b/README.md
index 4b9830d..ae5a68f 100644
--- a/README.md
+++ b/README.md
@@ -8,4 +8,20 @@ Repo to place STF binaries
 ```
 npm outdated # show outdated package
 npm update # update all deps
-```
\ No newline at end of file
+```
+
+## Usage of minicap.apk
+```bash
+./take-screenshot-with-minicap-apk.sh
+```
+
+But the script is not working on my mobile phone.
+
+Source can be found in <https://github.com/DeviceFarmer/minicap/blob/master/experimental>
+
+Usage ref:
+
+- <https://github.com/DeviceFarmer/stf/pull/262/files>
+- <https://github.com/DeviceFarmer/minicap/blob/master/experimental/app/src/main/java/io/devicefarmer/minicap/Main.kt>
+
+
diff --git a/take-screenshot-with-minicap-apk.sh b/take-screenshot-with-minicap-apk.sh
new file mode 100755
index 0000000..c6c87ec
--- /dev/null
+++ b/take-screenshot-with-minicap-apk.sh
@@ -0,0 +1,14 @@
+#!/bin/bash -x
+#
+set -e
+
+adb push node_modules/@devicefarmer/minicap-prebuilt/prebuilt/noarch/minicap.apk /data/local/tmp/
+
+JSON=$(adb shell CLASSPATH=/data/local/tmp/minicap.apk app_process /system/bin io.devicefarmer.minicap.Main -i)
+
+WIDTH=$(jq ".width" <<< $JSON)
+HEIGHT=$(jq ".height" <<< $JSON)
+ROTATION=$(jq ".rotation" <<< $JSON)
+
+adb shell CLASSPATH=/data/local/tmp/minicap.apk app_process /system/bin io.devicefarmer.minicap.Main -P "${WIDTH}x@${HEIGHT}@${WIDTH}x${HEIGHT}/$ROTATION" -Q 80 -s > tmp.jpg
+file tmp.jpg