Can't send sms anymore

[vallettea]

ant1 can receive but can't send anymore

[DEBUG quipu]  SMS port opened
[DEBUG quipu]  Raw AT message from sms:
 ATE1
[DEBUG quipu]  Raw AT message from sms:

OK

[DEBUG quipu]  Raw AT message from sms:
 AT+CMEE=2
[DEBUG quipu]  Raw AT message from sms:

OK

[DEBUG quipu]  Raw AT message from sms:
 AT+CPIN=6353
[DEBUG quipu]  Raw AT message from sms:
 AT+CNMI=2,1,0,2,0
[DEBUG quipu]  Raw AT message from sms:
 AT+CMGF=1
[DEBUG quipu]  Raw AT message from sms:
 AT+CMGD=0,4
[DEBUG quipu]  Raw AT message from sms:

+CME ERROR: operation not allowed

Transitioned from uninitialized to initialized
[DEBUG quipu]  INITIALIZED
[DEBUG quipu]  Raw AT message from sms:
 AT+CMGF=1
[DEBUG quipu]  Raw AT message from sms:

OK

[DEBUG quipu]  Raw AT message from sms:
 AT+CMGS="33671358943"
[DEBUG quipu]  Raw AT message from sms:

> 1
[DEBUG quipu]  Raw AT message from sms:

[DEBUG quipu]  Raw AT message from sms:
 ^z
[DEBUG quipu]  Raw AT message from sms:

+CMS ERROR: 500

[vallettea]

it seems to be a problem with Free since changing sim card solves the problem.

[vallettea]

Looking into ^SRVST: 2

[vallettea]

^SRVST: 0

[DEBUG quipu]  Raw AT message from sms:

^MODE: 0,0

[DEBUG quipu]  Raw AT message from sms:

^SIMST:1,0

Transitioned from uninitialized to initialized
[DEBUG quipu]  INITIALIZED
[DEBUG quipu]  Raw AT message from sms:
 AT+CMGF=1
[DEBUG quipu]  Raw AT message from sms:

OK

[DEBUG quipu]  Raw AT message from sms:
 AT+CMGS="33671358943"
[DEBUG quipu]  Raw AT message from sms:

>
[DEBUG quipu]  Raw AT message from sms:
 1
[DEBUG quipu]  Raw AT message from sms:

[DEBUG quipu]  Raw AT message from sms:
 ^z
[DEBUG quipu]  Raw AT message from sms:

^MODE: 5,4

[DEBUG quipu]  Raw AT message from sms:

^RSSI: 6

[DEBUG quipu]  Raw AT message from sms:

^SRVST: 2

[DEBUG quipu]  Raw AT message from sms:

+CMS ERROR: 500