Best Internet Service Providers in Sao Tome and Principe (2025) | TopProviders.net
Complete guide comparing internet speeds, reliability, and coverage across Sao Tome island and Principe island.
Top Internet Providers in Sao Tome and Principe
1. CST (Companhia Santomense de Telecomunicações)
Speed: Up to 20Mbps (ADSL) | Avg. 10 Mbps (4G LTE)
Coverage: Nationwide (Best in Sao Tome city)
Pros:
- National telecom operator with widest coverage
- Most reliable connection
- Local customer support
Cons:
- Limited maximum speeds
- Older infrastructure in some areas
2. Unitel STP
Speed: Up to 30Mbps (4G LTE)
Coverage: Urban areas on both islands
Pros:
- Faster mobile data speeds
- Competitive pricing
- Prepaid options available
Cons:
- Limited coverage in rural areas
- No fixed-line options
3. AirSat
Speed: Up to 10Mbps (Satellite)
Coverage: Nationwide including remote areas
Pros:
- Available everywhere
- No landline required
- Quick installation
Cons:
- High latency
- Weather-dependent reliability
- Expensive compared to alternatives
Internet Providers by Location
Sao Tome City Best Coverage
Top Providers: CST (Most reliable), Unitel (Fastest mobile), AirSat (Alternative)
Avg. Speed: 15Mbps (ADSL), 25Mbps (4G)
Special Notes: Some hotels and businesses use VSAT connections.
Principe Island Limited Options
Top Providers: CST (Only fixed-line), Unitel (Mobile), AirSat (Remote areas)
Avg. Speed: 8Mbps (ADSL), 15Mbps (4G)
Special Notes: Connectivity is significantly slower than Sao Tome island.
Rural Areas
Available Providers: AirSat (Primary), Unitel (Where mobile coverage exists)
Avg. Speed: 2-5Mbps (Satellite), 5-10Mbps (Mobile where available)
Special Notes: Many rural areas have no fixed internet infrastructure.
How to Choose Internet Service in Sao Tome and Principe
- Check available options at your exact location
- Consider your usage:
- Basic browsing: CST ADSL
- Mobile use: Unitel 4G
- Remote locations: AirSat satellite
- Ask neighbors about their experience
- Visit provider offices in person for most accurate information
Final Recommendations
- Best Overall: CST (Most reliable nationwide)
- Fastest Speeds: Unitel 4G (In covered areas)
- Remote Areas: AirSat (Only option in many locations)
Important Considerations
Internet infrastructure in Sao Tome and Principe is developing. Expect slower speeds and less reliability than in larger countries. Many residents use mobile data as primary internet access.
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