Data Sheet

Smart Machine Smart Decision
Mode
Max Response 2s
Time
Reference Note
When temperature is extremely high or low, product will power off.
URCs indicating the alert level "1" or "-1" are intended to enable the user to
take appropriate precautions, such as protecting the module from exposure
to extreme conditions, or saving or backing up data etc.
Level "2" or "-2" URCs are followed by immediate shutdown.
6.2.25 AT+CMGDA Delete All SMS
AT+CMGDA Delete All SMS
Response
+CMGDA: (list of supported <type>s)
OK
+CMS ERROR: <err>
Test Command
AT+CMGDA=?
Parameter
See Write Command
Response
OK
ERROR
+CMS ERROR: <err>
Write Command
AT+CMGDA=<t
ype>
Parameter
<type>
1) If text mode:
"DEL READ" Delete all read messages
"DEL UNREAD" Delete all unread messages
"DEL SENT" Delete all sent SMS
"DEL UNSENT" Delete all unsent SMS
"DEL INBOX" Delete all received SMS
"DEL ALL" Delete all SMS
2) If PDU mode:
1 Delete all read messages
2 Delete all unread messages
3 Delete all sent SMS
4 Delete all unsent SMS
5 Delete all received SMS
6 Delete all SMS
Parameter Saving NO_SAVE
Mode
Max Response 5s（delete 1 message）
SIM800 Series_AT Command Manual_V1.05 163 2014-07-31