Another info, if it can help: even if smsd continuously produces
"GN_OP_GetSMSStatus at line 411 in file lowlevel.c returns error 5"
it works fine while sending sms.
Error 5 is defined as GN_ERR_NOTIMPLEMENTED include/gnokii/error.h.
Smsd uses GN_OP_GetSMSStatus to get status of inbox folder. Smsd tries to
download new messages only in case inbox status changed.
It looks that for your phone driver GN_OP_GetSMSStatus isn't implemented.
After quick look to lowlevel.c I prepared dirty hack which put smsd to silly
mode. In this mode smsd doesn't use GN_OP_GetSMSStatus but it tries to read
sms's on every pass.
The patch is completely untested.