I'm trying to use the ISMSStorage interface, and I have read a slew of conflicting posts about this interface.

I've successfully used functions like:

ISMSSTORAGE_GetStorageStatus()
ISMSSTORAGE_EnumMsgInit()

But important functions such as ISMSSTORAGE_ReadMsg() and ISMSSTORAGE_EnumNextMsg() always fail with either EFAILED or EBADPARM.

I'm wondering which parameter could be causing the EBADPARM error, possilby AEESMSStorageType?

AEESMS_NV_CDMA = EBADPARM
AEESMS_NV_GW = EFAILED ... for all functions that use it
AEESMS_CARD_RUIM = EFAILED or crash depending on the phone
AEESMS_CARD_SIM = EFAILED