I tried to search on my issue. This is what i found SMS Error: Requested facility not implemented
This is what is suggested in this forum:
Options/SMS/Network to Send Over: GSM
But i dont see GSM as the option under "Network to Send Over"
I have these 4 options:
1. Circuit Switched
2. Circuit Switched Preferred
3. Packet Switched Preferred
4. Packet Switched
Will this help?