diff --git a/notification/AcceptedResultPojo.py b/notification/AcceptedResultPojo.py
index 1b85009..5bd04ec 100644
--- a/notification/AcceptedResultPojo.py
+++ b/notification/AcceptedResultPojo.py
@@ -3,7 +3,6 @@ from dataclasses import dataclass
 from dataclasses_json import dataclass_json
 
 from pojo import ReserveResultPojo
-from pojo.SimInfoPojo import SimInfoPojo
 
 
 @dataclass_json
diff --git a/workers/wait_sms_worker.py b/workers/wait_sms_worker.py
index d0f92fd..090df7b 100644
--- a/workers/wait_sms_worker.py
+++ b/workers/wait_sms_worker.py
@@ -29,7 +29,8 @@ class WaitSmsWorker:
             "sms received for phone:{}(ccid:{})".format(self.serial_modem.phone_number, self.serial_modem.ccid))
         self.logger.info(
             u'== SMS message received ==\nFrom: {0}\nTime: {1}\nMessage:\n{2}\n'.format(sms.number, sms.time, sms.text))
-        self.check_sms(sms, int(self.serial_modem.phone_number))
+        if self.serial_modem.phone_number:
+            self.check_sms(sms, int(self.serial_modem.phone_number))
         params.oracle_log_sender.send_sms_reception_log(sms.number, sms.text, self.serial_modem.ccid)
 
     def run(self):