Hi, Diana!
Dataсard module works for me about 1 year.
Works with 4 usb modem huawei E173, and correspondingly, with 4 different gsm providers in Russia.
I am used only voice function.
Ussd sms still work, but I am do not use.
After updating to build 154, I stopped watching periodic restarts yate.
Author promptly responds to reports with bugs.
In general I am quite happy with this unit.
Best regards,
cc08.