Receive WIP_BEV_IP_DISCONNECTED when sending sms

I use the openat platform to develope my function on Q2687G. At fist, I build the socket to exchange data with server. Using a sim card, I receive the WIP_BEV_IP_DISCONNECTED message when I send a SMS. but I use other sim cards, the Q2687G doesn’t send out the WIP_BEV_IP_DISCONNECTED message. what reason for this? thanks.


Do you have any distributor to raise the ticket with sierra wireless… If not, let me know please.
It seems to be the network issue. Is it like 100 % reproducible?? or the event comes sometimes?
With the same operator and other SIM card, is the issue present? or with a specific sim only?