If I remember right you should be abke to open app and click menu and seee the security options setting menu....
1. Open the 3G Mobile Hotspot app.
2. Tap Menu > Advanced > WiFi AP mode Settings.
3. Modify the following settings as needed:
- SSID - Name for your connection Next.
- Security - Select the type of security you want. This will prevent unauthorized access. WPA2 is recommended by IEEE.
- Channel - Select a channel that minimizes potential
Tap Save when the settings are complete.