MikroTik Chateau LTE18 (RBD53G-5HacD2HnD&EG18-EA)
RouterOS 7.14 stable
Problem with sending SMS.
The router can only send up to 20 SMS before displaying the error message 'Can't send SMS with MBIM: MEMORY_FULL'. Additionally, SMS messages are not displayed or deleted through WinBox. If the SIM card is removed and inserted into a phone, outgoing SMS messages saved on the SIM card can be viewed. After deleting SMS messages from the SIM card, everything works again, but only up to 20 sent messages.
The question is how to delete SMS messages from the SIM card using Winbox or RouterOS, and how to make the router display outgoing messages or prevent them from being saved.
The command '/tool sms inbox remove $i' only removes incoming messages.