Companhia Santomense de Telecomunicações

What Companhia Santomense de Telecomunicações does

Companhia Santomense de Telecomunicações (CST) is the incumbent integrated telecommunications operator in São Tomé and Príncipe, founded on December 20, 1989, with commercial operations beginning January 1, 1990. It is structured as a mixed-capital SARL, with 51% held by Portuguese multinational Visabeira Global SGPS, S.A. and 49% by the Government of São Tomé and Príncipe, and self-describes as the market leader in the national telecommunications sector. CST operates under GSM and 4G LTE mobile licenses valid until March 1, 2027, with infrastructure spanning more than 100 4G mobile network sectors deployed nationwide, alongside fixed-line voice, ADSL, and fiber optic networks. The company distributes services through 12 official retail stores across both São Tomé and Príncipe islands, supported by authorized agents, distributors, bank-based reload channels (BGFI, BISTP, ECOBANK, Caixa Geral de Depósitos), and international reload platforms (Payshop Portugal with 7,000+ agents, DING global).

CST's product portfolio centers on three core service lines. The mobile offering includes prepaid tariffs (Leve-Leve at 1.38 Dbs per 30 seconds for on-net voice), postpaid plans (Príncipe, Netfone), mobile data packages (Netfone, Netmóvel ranging from 1GB to 60GB), and bundled voice/SMS/data packages in the Turbo +NET, Turbinho, SuperTurbo, and Turbo Max tiers. Fixed services comprise the Simple Network Line (200 Dbs monthly), RDIS Basic Access (400 Dbs monthly), international calling tariffs, and Fixed Internet across seven tiers from 8Mbps Light (790 Dbs) to 300Mbps Empresarial (12,075 Dbs). Enterprise solutions include Plano Pro (per-seat unlimited intra-company voice/SMS), Plano Smart (volume-based plans with up to 50% network discount), Fibra Empresarial (200–300Mbps business fiber), Circuito de Dados (SHDSL links), IP Fixo, and Linha Verde/Azul call-center solutions. Value-added services include CST ON streaming (25 Dbs monthly with bundled free data), eSIM digital activation (50 Dbs fee), and hardware sales of phones, tablets, and 4G routers. Roaming partnerships cover Unitel (Angola), Vodacom (South Africa), Orange (France), MEO/Vodafone/NOS (Portugal), CV Móvel and Unitel T+ (Cape Verde), and MTN (Cameroon).

The business model combines subscription revenue (fixed internet, postpaid mobile, Turbo bundles, business plans, CST ON), usage-based revenue (prepaid voice, SMS and data, international roaming, international calls), and hardware sales. CST serves three primary customer segments — individual consumers (Pessoal), businesses and enterprises (Empresas), and international/roaming users — with dedicated account managers for the enterprise segment and self-service via call centers (19000/19144/19133), WhatsApp, email, and online portals for consumer accounts. Marketing operates through Facebook, WhatsApp Business, SMS, the cst.st website, and seasonal promotional campaigns. The company received AGER regulatory recognition in both 2024 and 2025 as the mobile network with greatest national coverage, best quality, and fastest internet speed, reported at twice the speed of the competing operator.

Name

Companhia Santomense de Telecomunicações

Legal name

CST – Companhia Santomense de Telecomunicações, SARL

Website

https://cst.st

Company type

Private

Founded year

1989

Operating status

Operating

Headcount range

51–100 employees

Short description

Companhia Santomense de Telecomunicações (CST) is the incumbent integrated telecommunications operator in São Tomé and Príncipe, providing mobile (GSM/4G), fixed-line voice, fixed broadband internet, enterprise solutions, and streaming services to consumer and business customers nationwide.

Ownership category

akta.pro rank

Headquarters

HQ city

São Tomé

HQ country

São Tomé & Príncipe

Offices13 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Infrastructure, Personnel, Operations, Technology or R&D, Supply Chain, Marketing or Sales

Revenue model

1. Fixed Internet Services: Monthly subscriptions for fixed broadband internet via Light (8Mbps), Unlimited tiers (12-100Mbps), and Business plans (200-300Mbps) with varying data allowances and pricing
2. Fixed Voice Services: Monthly line rentals and per-minute call charges for basic lines, RDIS access, and international calling packages
3. Mobile Prepaid Services: Pay-as-you-go mobile services including voice, SMS, and data. Revenue from airtime sales, reload cards (20-300 Dbs denominations), and data packages. Leve-Leve tariff offers competitive per-second voice rates.
4. Mobile Postpaid Services: Monthly subscription plans for voice and data including Príncipe postpaid tariff, Netfone postpaid, and Netmóvel data-only plans with various data allowances
5. Turbo +NET Bundles: Bundled voice, SMS, and data packages available in daily, weekly, and monthly validity periods (Turbinho, Turbo, SuperTurbo, Turbo Max tiers)
6. Mobile Equipment Sales: Retail sales of mobile phones, tablets, and 4G routers including brands like SPC, TCL, ZTE, Samsung, Xiaomi, and Alcatel
7. Business Solutions: Corporate services including Plano Pro (unlimited intra-company voice/SMS), Plano Smart (volume-based business plans), Fibra Empresarial (fiber business internet), Circuito de Dados (SHDSL links), and dedicated lines
8. International Roaming: Roaming services charged when customers use services abroad; roaming activated automatically with partner operators worldwide
9. International Calling: Premium rates for international calls to destinations including Angola, Portugal, France, USA, Brazil, China, and other countries
10. CST ON Streaming Subscription: Monthly subscription service providing unlimited access to streaming content with free data for subscribed customers at 25 Dbs per month

Pricing tiers

Go-to-market motion3 records

Distribution channels9 records

Marketing channels6 records

Core offering

CST operates as a unified telecommunications operator in São Tomé and Príncipe, providing fixed and mobile voice, data, and broadband internet services to residential and business customers. The portfolio includes prepaid and postpaid mobile plans, fixed-line voice with RDIS access, ADSL and fiber-optic internet tiers, value-added bundles, business solutions (corporate voice, business fiber, SHDSL data circuits), international roaming, eSIM, and a streaming subscription service (CST ON).

Product overview

Companhia Santomense de Telecomunicações (CST) operates as a unified telecommunications operator offering fixed and mobile voice, data, and internet services for residential and business customers in São Tomé and Príncipe. The product portfolio centers on three core services: Mobile (Móvel) covering prepaid/postpaid voice and mobile internet via Netfone and Netmóvel packages; Fixed Line (Fixo) providing voice and internet connectivity; and Internet Fixa delivering fixed broadband at multiple speed tiers. The offering is complemented by value-added bundles including Turbo +NET, Turbinho, Superturbo +NET, and Turbo Max +NET which package voice, SMS, and data at various price points. Business solutions include Plano Pro and Plano Smart for corporate mobile needs, NetFibra business fiber, data circuits (SHDSL), and Linha Verde/Azul call center services. The company also offers a streaming service (CST ON), digital eSIM capability, and sells mobile equipment including phones, tablets, and routers. Services are provided through a network of 12 retail stores and multiple distributors across the national territory.

Differentiator

Problem solved

Functional benefit

Products and services

• CST Móvel (Mobile Service)
• CST Fixo (Fixed Line Service)
• Internet Fixa (Fixed Internet)
• Netfone
• Netmóvel
• Turbo +NET
• CST ON
• CST eSIM
• Linhas Telefónicas (Corporate Voice Lines)
• Plano Pro
• Plano Smart
• Fibra Empresarial
• Circuito de Dados (Data Circuit)
• Linha Verde e Azul
• Mobile Equipment and Accessories

Segments3 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration6 records

Feature3 records

Partnerships

Nine partnerships are on record, tiered core, strategic and minor.

• Unitel (Angola)coreTechnology or IntegrationRoaming partner for postpaid and prepaid voice and SMS services. Allows CST customers to use services while in Angola.
• Vodacom (South Africa)coreTechnology or IntegrationRoaming partner providing postpaid voice/SMS, postpaid 3G data, and prepaid voice/SMS services for travelers in South Africa.
• Orange (France)coreTechnology or IntegrationRoaming partner in France offering postpaid voice/SMS, 3G data, and prepaid voice/SMS services.
• MEO, Vodafone, NOS (Portugal)coreTechnology or IntegrationAll three major Portuguese operators serve as roaming partners providing full postpaid and prepaid services for CST customers traveling in Portugal.
• CV Móvel and Unitel T+ (Cape Verde)coreTechnology or IntegrationCape Verde roaming partners offering postpaid voice/SMS, 3G data, and prepaid services.
• Payshop PortugalstrategicChannel Partner/ Reseller/ DistributorInternational reload partner with 7,000+ agents in Portugal. Allows diaspora and travelers to reload CST prepaid numbers from Portugal via ATM or online banking.
• DINGstrategicChannel Partner/ Reseller/ DistributorGlobal digital reload platform allowing international prepaid top-ups from anywhere in the world for CST customers.
• Caixa Geral de Depósitos (Portugal)minorChannel Partner/ Reseller/ DistributorPortuguese bank facilitating international transfers for CST prepaid reloads and bill payments.
• BGFI, BISTP, ECOBANKstrategicChannel Partner/ Reseller/ DistributorNational banking partners in São Tomé and Príncipe enabling prepaid reloads and bill payments via bank transfer.

Scale indicators9 records

Recent moves6 records

Expansion highlights5 records

Regional players

• MEO (Portugal Telecom): Portuguese incumbent operator and one of three CST roaming partners in Portugal; comparable for fixed broadband tiering (fiber up to 300 Mbps), business solutions and convergent bundles.
• Movicel Telecomunicações (Angola): Angola's second mobile operator offering mobile voice, data and fixed services in a Lusophone African market; relevant peer for technology and product mix benchmarking in the regional context.
• Unitel S.A. (Angola): Largest mobile operator in Angola and a named CST roaming partner. Comparable mobile-first operator serving a Lusophone African market with strong diaspora connectivity to Portugal and Brazil.

Direct peers

• Cabo Verde Telecom (CVTelecom): Incumbent telecom operator in Cape Verde, another small Lusophone island archipelago in West Africa. Comparable business model across mobile, fixed, broadband and TV in a similarly sized island market with significant diaspora.
• Unitel STP (Moov Africa São Tomé e Príncipe): The other mobile operator in São Tomé and Príncipe, directly competing with CST across mobile voice, data, and fixed-line services in the same small island market; this is the 'other operator' whose 2x slower mobile speeds were benchmarked by AGER against CST.
• CV Móvel (Cabo Verde): Mobile competitor to Cabo Verde Telecom on the Cape Verde islands and a named CST roaming partner; small-market island telco with comparable prepaid/postpaid structure.

Broad incumbents

• Vodacom (Mozambique): Large African mobile operator and a CST roaming partner; relevant peer for M-Pesa-style mobile money, prepaid segmentation, and rural coverage practices.
• Sonatel (Senegal): West African incumbent with mobile, fixed and broadband offerings, partly owned by Orange. Comparable as a Lusophone/Francophone African operator balancing consumer prepaid with enterprise and fixed-line services.
• MTN Cameroon: Major African mobile operator and a named CST roaming partner; relevant peer for benchmarking prepaid/postpaid structure, data bundles, and network quality across Central and West Africa.

Others

• Orange (Africa & Middle East operations):

Market position

Strengths1 record

Weaknesses5 records

Competitive moat5 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/CSTelecom
• LinkedInlinkedin.com/company/companhia-santomense-de-telecomunica-es

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Companhia Santomense de Telecomunicações