diff --git a/tests/sms.txt b/tests/sms.txt
new file mode 100644
index 0000000..be4aca2
--- /dev/null
+++ b/tests/sms.txt
@@ -0,0 +1 @@
+03 02 01 0a 02 43 0b 00 1d 39 01 1a 00 01 00 07 91 55 11 18 31 28 00 0e 31 20 04 81 21 43 00 00 ff 04 d4 f2 9c 0e