The logo of Swiss telecoms group Swisscom is seen on an office building in Zurich, Switzerland, April 8, 2021. Picture taken with long exposure. REUTERS/Arnd Wiegmann

The logo of Swiss telecoms group Swisscom is seen at an office building, in Zurich, Switzerland May 26, 2020. REUTERS/Arnd Wiegmann

The logo of Swiss telecoms group Swisscom is seen at an office building, in Duebendorf, Switzerland May 26, 2020. REUTERS/Arnd Wiegmann

The logo of Swiss telecoms group Swisscom is seen at an office building, in Zurich, Switzerland May 26, 2020. REUTERS/Arnd Wiegmann

Chief Executive Urs Schaeppi of Swiss internet, mobile phone and digital television provider Swisscom addresses a news conference in Zurich, Switzerland November 14, 2019. REUTERS/Arnd Wiegmann

A new Swisscom Box, which combines traditional television with streaming in a new interface and can be controlled by using an integrated voice assistant, also to operate smart home devices, is displayed during a news conference of Swiss internet, mobile phone and digital television provider Swisscom in Zurich, Switzerland November 14, 2019. REUTERS/Arnd Wiegmann

Chief Executive Urs Schaeppi of Swiss internet, mobile phone and digital television provider Swisscom addresses a news conference in Zurich, Switzerland November 14, 2019. REUTERS/Arnd Wiegmann

Chief Executive Urs Schaeppi of Swiss internet, mobile phone and digital television provider Swisscom addresses a news conference in Zurich, Switzerland November 14, 2019. REUTERS/Arnd Wiegmann

Chief Executive Urs Schaeppi of Swiss internet, mobile phone and digital television provider Swisscom addresses a news conference in Zurich, Switzerland November 14, 2019. REUTERS/Arnd Wiegmann

A technician is roped up as he installs 5G antennas of Swiss telecom operator Swisscom on a mast in the mountain resort of Lenzerheide, Switzerland June 13, 2019. REUTERS/Arnd Wiegmann

5G antennas of Swiss telecom operator Swisscom are seen during installation works on a mast in the mountain resort of Lenzerheide, Switzerland June 13, 2019. REUTERS/Arnd Wiegmann

5G antennas of Swiss telecom operator Swisscom are seen during installation works on a mast in the mountain resort of Lenzerheide, Switzerland June 13, 2019. REUTERS/Arnd Wiegmann

5G antennas of Swiss telecom operator Swisscom are seen during installation works on a mast in the mountain resort of Lenzerheide, Switzerland June 13, 2019. REUTERS/Arnd Wiegmann

A technician is roped up as he installs 5G antennas of Swiss telecom operator Swisscom on a mast in the mountain resort of Lenzerheide, Switzerland June 13, 2019. REUTERS/Arnd Wiegmann

Technicians are roped up as they install 5G antennas of Swiss telecom operator Swisscom on a mast in the mountain resort of Lenzerheide, Switzerland June 13, 2019. REUTERS/Arnd Wiegmann

Technicians are roped up as they install 5G antennas of Swiss telecom operator Swisscom on a mast in the mountain resort of Lenzerheide, Switzerland June 13, 2019. REUTERS/Arnd Wiegmann

Technicians are roped up as they install 5G antennas of Swiss telecom operator Swisscom on a mast in the mountain resort of Lenzerheide, Switzerland June 13, 2019. REUTERS/Arnd Wiegmann

Technicians are roped up as they install 5G antennas of Swiss telecom operator Swisscom on a mast in the mountain resort of Lenzerheide, Switzerland June 13, 2019. REUTERS/Arnd Wiegmann

Technicians are roped up as they install 5G antennas of Swiss telecom operator Swisscom on a mast in the mountain resort of Lenzerheide, Switzerland June 13, 2019. REUTERS/Arnd Wiegmann

Technicians are roped up as they install 5G antennas of Swiss telecom operator Swisscom on a mast in the mountain resort of Lenzerheide, Switzerland June 13, 2019. REUTERS/Arnd Wiegmann

Technicians are roped up as they install 5G antennas of Swiss telecom operator Swisscom on a mast in the mountain resort of Lenzerheide, Switzerland June 13, 2019. REUTERS/Arnd Wiegmann

Chief Executive Urs Schaeppi of Swiss internet, mobile phone and digital television provider Swisscom addresses the company's annual news conference in Zurich, Switzerland February 7, 2019. REUTERS/Arnd Wiegmann

Chief Executive Urs Schaeppi of Swiss internet, mobile phone and digital television provider Swisscom addresses the company's annual news conference in Zurich, Switzerland February 7, 2019. REUTERS/Arnd Wiegmann

Chief Executive Urs Schaeppi of Swiss internet, mobile phone and digital television provider Swisscom addresses the company's annual news conference in Zurich, Switzerland February 7, 2019. REUTERS/Arnd Wiegmann

Chief Executive Urs Schaeppi of Swiss internet, mobile phone and digital television provider Swisscom addresses the company's annual news conference in Zurich, Switzerland February 7, 2019. REUTERS/Arnd Wiegmann

Chief Executive Urs Schaeppi of Swiss internet, mobile phone and digital television provider Swisscom addresses the company's annual news conference in Zurich, Switzerland February 7, 2019. REUTERS/Arnd Wiegmann

Chief Executive Urs Schaeppi of Swiss internet, mobile phone and digital television provider Swisscom addresses the company's annual news conference in Zurich, Switzerland February 7, 2019. REUTERS/Arnd Wiegmann

Chief Executive Urs Schaeppi of Swiss internet, mobile phone and digital television provider Swisscom addresses the company's annual news conference in Zurich, Switzerland February 7, 2019. REUTERS/Arnd Wiegmann

The logo of Swiss telecommunications company Swisscom is seen at an office building in the city of Zurich, Switzerland January 29, 2019. REUTERS/Arnd Wiegmann

A former building of Switzerland's telecommunications Swisscom is pictured in Zurich, Switzerland September 10, 2018. Picture taken September 10, 2018. REUTERS/Arnd WIegmann

CEO Andreas Meyer (3rd L) of Swiss railway operator SBB presents plans to launch a single digital identity for Swiss consumers during a news conference in Zurich, Switzerland November 21, 2017. The picture shows (L to R): CEO Susanne Ruoff of Schweizerische Post, president of the board of directors of Swiss bank UBS Lukas Gaehwiler, CEO Andreas Meyer of SBB, CEO of Swiss telcomunications company Swisscom Urs Schaeppi, CEO Patrik Gisel of Raiffeisen Schweiz bank, CEO Thomas Gottstein of Credit Suisse (Schweiz) AG, CEO Urs Rueeggsegger (covered) of SIX Group, head of products, services and direct banking Daniel Previdoli of Zuercher Kantonalbank and CEO Markus Hongler of Swiss insurance company Mobiliar. REUTERS/Arnd Wiegmann

CEO Andreas Meyer (3rd L) of Swiss railway operator SBB presents plans to launch a single digital identity for Swiss consumers during a news conference in Zurich, Switzerland November 21, 2017. The picture shows (L to R): CEO Susanne Ruoff of Schweizerische Post, president of the board of directors of Swiss bank UBS Lukas Gaehwiler, CEO Andreas Meyer of SBB, CEO of Swiss telcomunications company Swisscom Urs Schaeppi, CEO Patrik Gisel of Raiffeisen Schweiz bank, CEO Thomas Gottstein of Credit Suisse (Schweiz) AG, CEO Urs Rueeggsegger (covered) of SIX Group, head of products, services and direct banking Daniel Previdoli of Zuercher Kantonalbank and CEO Markus Hongler of Swiss insurance company Mobiliar. REUTERS/Arnd Wiegmann

The logo of Switzerland's Swisscom telecommunications is seen at an office building in Zurich, Switzerland November 22, 2016. REUTERS/Arnd Wiegmann

The logo of Switzerland's Swisscom telecommunications is seen at an office building in Zurich, Switzerland August 22, 2016 REUTERS/Arnd Wiegmann

A long-time exposure shows an office building of Switzerland's Swisscom telecommunications in Zurich, Switzerland August 22, 2016 REUTERS/Arnd Wiegmann

A public telephone box of Switzerland's Swisscom telecommunications is seen at the Bahnhofstrasse in Zurich, Switzerland March 7, 2016. REUTERS/Arnd Wiegmann

A public telephone box of Switzerland's Swisscom telecommunications is seen at the Bahnhofstrasse in Zurich, Switzerland March 7, 2016. REUTERS/Arnd Wiegmann

CEO Urs Schaeppi of Swiss telecom company Swisscom speaks to media during their annual news conference in Zurich, Switzerland February 4, 2016. REUTERS/Ruben Sprich

CFO Mario Rossi of Swiss telecom company Swisscom speaks to media during their annual news conference in Zurich, Switzerland February 4, 2016. REUTERS/Ruben Sprich

CEO Urs Schaeppi of Swiss telecom company Swisscom speaks to media during their annual news conference in Zurich, Switzerland February 4, 2016. REUTERS/Ruben Sprich

CEO Urs Schaeppi of Swiss telecom company Swisscom speaks to media during their annual news conference in Zurich, Switzerland February 4, 2016. REUTERS/Ruben Sprich

CEO Urs Schaeppi of Swiss telecom company Swisscom speaks to media during their annual news conference in Zurich, Switzerland February 4, 2016. REUTERS/Ruben Sprich

CEO Urs Schaeppi of Swiss telecom company Swisscom speaks to media during their annual news conference in Zurich, Switzerland February 4, 2016. REUTERS/Ruben Sprich

The logo of Swiss telecom company Swisscom is seen at their headquarters in Worblaufen outside Bern, Switzerland, February 2, 2016. REUTERS/Ruben Sprich

The logo of Swiss telecom company Swisscom is seen at their headquarters in Worblaufen outside Bern, Switzerland, February 2, 2016. REUTERS/Ruben Sprich

The logo of Swiss telecom company Swisscom is seen at their headquarters in Worblaufen outside Bern, Switzerland, February 2, 2016. REUTERS/Ruben Sprich

The logo of Swiss telecom company Swisscom is seen at their headquarters in Worblaufen outside Bern, Switzerland, February 2, 2016. REUTERS/Ruben Sprich

The logo of Swiss telecom company Swisscom is seen at their headquarters in Worblaufen outside Bern, Switzerland, February 2, 2016. REUTERS/Ruben Sprich

The logo of Swiss telecom company Swisscom is seen at their headquarters in Worblaufen outside Bern, Switzerland, February 2, 2016. REUTERS/Ruben Sprich

Project leader of AutoNOMOS, Tinosch Ganjineh (L) takes his hands off the steering wheel next to his colleague Daniel Goehring during a presentation of the self-driving car in Zurich, Switzerland May 12, 2015. Swisscom IT technologies who are involved in the design and development of AutoNOMOS, the first self-driving car in Switzerland presented the car today . REUTERS/Ruben Sprich

AutoNOMOS self-driving car drives during a presentation in Zurich, Switzerland May 12, 2015. Swisscom IT technologies who are involved in the design and development of AutoNOMOS, the first self-driving car in Switzerland presented the car today . REUTERS/Ruben Sprich

AutoNOMOS self-driving car drives during a presentation in Zurich, Switzerland May 12, 2015. Swisscom IT technologies who are involved in the design and development of AutoNOMOS, the first self-driving car in Switzerland presented the car today . REUTERS/Ruben Sprich

Swiss telecoms provider Swisscom CEO Urs Schaeppi speaks to media on new roaming costs in the EU, during a news conference in Bern February 19, 2015. REUTERS/Ruben Sprich (SWITZERLAND - Tags: BUSINESS TELECOMS HEADSHOT)

Swiss telecoms provider Swisscom CEO Urs Schaeppi has his headset adjusted prior to a news conference on new roaming costs in the EU in Bern February 19, 2015. REUTERS/Ruben Sprich (SWITZERLAND - Tags: BUSINESS TELECOMS)

A man walks past a shop of Swiss telecoms company Sunrise in Zurich January 14, 2015. Swiss mobile telecoms company Sunrise plans to raise around 1.35 billion Swiss francs ($1.3 billion) in a stock market debut, potentially Switzerland's biggest flotation since 2006. Switzerland's No.2 telecoms operator behind Swisscom saidJanuary 14, 2015, the move -- the latest planned capital raising in a lively start to 2015 for European equity markets -- would help to cut its debt. REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: BUSINESS TELECOMS)

People walk past a shop of Swiss telecoms company Sunrise in Zurich January 14, 2015. Swiss mobile telecoms company Sunrise plans to raise around 1.35 billion Swiss francs ($1.3 billion) in a stock market debut, potentially Switzerland's biggest flotation since 2006. Switzerland's No.2 telecoms operator behind Swisscom saidJanuary 14, 2015, the move -- the latest planned capital raising in a lively start to 2015 for European equity markets -- would help to cut its debt. REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: BUSINESS TELECOMS)

The company's logo is pictured at a shop of Swiss telecoms company Sunrise in Zurich January 14, 2015. Swiss mobile telecoms company Sunrise plans to raise around 1.35 billion Swiss francs ($1.3 billion) in a stock market debut, potentially Switzerland's biggest flotation since 2006. Switzerland's No.2 telecoms operator behind Swisscom saidJanuary 14, 2015, the move -- the latest planned capital raising in a lively start to 2015 for European equity markets -- would help to cut its debt. REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: BUSINESS TELECOMS LOGO)

The company's logo is pictured at a shop of Swiss telecoms company Sunrise in Zurich January 14, 2015. Swiss mobile telecoms company Sunrise plans to raise around 1.35 billion Swiss francs ($1.3 billion) in a stock market debut, potentially Switzerland's biggest flotation since 2006. Switzerland's No.2 telecoms operator behind Swisscom saidJanuary 14, 2015, the move -- the latest planned capital raising in a lively start to 2015 for European equity markets -- would help to cut its debt. REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: BUSINESS LOGO BUSINESS TELECOMS)

Traffic flows past the headquarters of Swiss media company Tamedia in Zurich April 17, 2014. Swiss media company Tamedia said on Tuesday it had raised its offer to buy PubliGroupe to 190 Swiss francs ($212.36) per share from 150 per share, but its bid still fell short of a recent offer from Swisscom. Tamedia and Swiss national telecoms provider Swisscom are both keen to gain control of PubliGroupe's online directory platforms as the market for digital advertising grows. Picture taken with a long exposure on April 17, 2014. REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: BUSINESS MEDIA LOGO)

Urs Schaeppi, CEO of Swiss phone company Swisscom AG addresses the company's annual news conference in Zurich February 6, 2014. Switzerland's national telecoms operator said on Thursday it expected earnings before interest, tax, depreciation and amortisation (EBITDA) to tick up to 4.35 billion Swiss francs ($4.8 billion) in 2014, with sales rising to 11.5 billion. REUTERS/Denis Balibouse (SWITZERLAND - Tags: BUSINESS TELECOMS)