- Notes, cautions, and warnings
- Setting up your computer
- About your computer
- Using your computer
- Ports and connectors
- Software and Applications
- Restoring your operating system
- Troubleshooting
- BIOS
- Getting help and contacting Dell
- References
Wireless Wide Area Network (WWAN) controllers allow wireless connectivity through cellular tower technology. This technology is mainly available on phones, tablets, and business-class laptops. A SIM card and a service contract may be required for WWAN connectivity.