We apologize for any inconvenience this may have caused you.
Kindly be advised that Call Recording feature is not supported in Samsung Gulf region.
Regarding the issue that you are facing with dual messenger, please send an error report to our technical team so they will be able to investegate the issue and assist you in solving it. To send an error report, please follow the below steps:
Long press the Samsung Members icon on the Apps screen and Tap Error reports.
Tap OK on the agreement popup to send system log data.
Select Symptom category.
Describe the problem in detail and SEND.
We are sorry to say that at the moment, there is no option to lock any application on your device. You can check the secure folder option. Or, you can install a third party application for locking your applications and we strongly recommend checking the review of the third party application before installing it.