The mainstream telecom operators list around the world:
1. United States
Cingular Wireless (the largest mobile phone operator in US)
- Sprint (the third largest telecom operator in US)
- Verizon Wireless (the largest telephone communications company in US)
- AT&T (the largest telecom operator in US, one of the world’s top digital communications companies)
2. United Kingdom
- 3UK
- Virgin Mobile
- Vodafone (UK’s largest mobile communications operator with subsidiaries in 29 countries)
- Orange
- MMO2
- T-Mobile UK
3. Germany
- Deutsche Telekom Deutsche Telekom (Germany’s largest telecom operator)
- German mobile phone operator O2
- Germany E-Plus company (the third largest mobile phone operator in Germany)
- Germany MobileCom
4. France
- France Telecom (France’s largest telecom operator)
- Orange (French Telecom Operator)
- SFR (France’s second largest mobile operator)
5. South Korea
- SK Telecom (a world-class company with the information and communication industry as its core)
- LG Telecom (Korea’s mobile business ranked third)
- KTF (Korea’s mobile business ranked second)
- KT (Korea Telecom, the largest operator of fixed telephone service)
6. Japan
KDDI (Japan’s largest operator)
- NTT DoCoMo (Japan’s number one mobile communication company)
- Vodafone (Japan’s second-ranked mobile communications company, now is Softbank Mobile, Mobile Academy Note)
- NTT (Japan Telecom)
7. Singapore’s three major operators
- Singapore Telecom (Singtel) – Singapore’s largest telecom operator, with greater mergers and acquisitions, more prominent capital operations
- Singapore Mobile First (MobileOne) (Singapore’s second largest mobile operator)
- StarHub (Singapore’s third largest mobile phone operator)
8. Italy‘s two major operators Vodafone Italy and TIM
9. Hong Kong PCCW, Sunday, People,
10. Taiwan Chunghwa Telecom, Taiwan Mobile., Far EasTone
11. Vietnam VNPT, Mobifone, VinaPhone
12. Thailand AIS, TelecomAsia, CAT, TOT, TT&T Public 5 major operators
13. Indonesia PT Telkomsel
14. Philippines: Philippine Global Crossing Corporation, Philippine Long Distance Telephone Group
15. Pakistan: Pakistan Telecom Co., Ltd. (PTCL), National Telecommunications Corporation (NTC), Special Communications Organization
( SCO )
16. India: BSNL, Reliance Infoco, Indian Mobile Operators Association (COAI)
17. Bangladesh: GrameenPhone, Teletalk Bangladesh Limited, SHEBA, PACIFIC Bangladesh Telecom
( Citycell ) , TMIB
18. Kazakhstan: Harbin Telecom, TOO GSM-Kazakhstan
19. Spain‘s leading mobile operator: Telefó nica (global TOP 10 telecom operator)
20. Brazil‘s three major operators: Vivo Telecom Italia SpA Claro (Brazil is one of the fastest growing mobile markets in the world)
21. Finnish telecom operator: Sonera (the world’s first mobile communication service provider)
22. Two mobile phone operators in Kenya operate Safaricom and Celtel
23. Asiacell (mobile operations in northern Iraq)
24. Investcom Lebanese Mobile Telecommunications Corporation
25. Australian Telecommunications (ranks seventh in market capital in the world telecommunications industry)
26. Mobilcom (Austrian mobile operator)
Reference data from telecom operator ranking in 2018 rank by total revenue (From Wiki):
About us
Key2 Optics, the optical products division of Smart IoT Technology, our main business is the production and sale of Optical Fiber Module, Optical Tranceivers, CWDM & DWDM Mux|Demux equipment, Fiber Optical cables and enclosures and other optic accessories. There are production workshop training techniques in the factory, and ISO, CE, FCC, RoHS certified production line and products to suit your requirements. The company always insists on the direct sales of the factory and the direct delivery of the warehouse; eliminates the dealers to increase the price, puts the real benefits into the hands of the customers, and adheres to the scientific and technological power, the advanced technology as the concept, the honest and trustworthy management mode, the products were deployed to more than 30 foreign countries since 2009.
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