The Kyivstar mobile network covers all cities of Ukraine, as well as more than 28,000 rural settlements, all major national and regional routes, most sea, and river coasts.

With the start of 4G implementation, the average data download speed in the Kyivstar network has almost doubled, from 17.9 Mbit/s in 2018 to 33.2 Mbit/s in the first half of 2021, which is the highest among mobile operators in Ukraine.

In the ranking of the 500 largest companies in Central and Eastern Europe compiled by Deloitte, Kyivstar took 146th place, the highest among Ukrainian mobile operators.

On August 11, 2014, Kyivstar stopped serving its subscribers in Crimea and Sevastopol due to an armed attack on the company's office in Simferopol.

On February 23, 2015, Kyivstar purchased a license to provide services in the UMTS standard, which belongs to the third generation of mobile communications (3G).

November 14, 2016, was the 20th anniversary of the opening of the listing on the American stock exchange,  one of the most important milestones in the history of the international group of companies VEON, which includes the national telecommunications operator Kyivstar.

On March 23, 2017, Kyivstar initiated the reform of radio frequencies in the 1800 MHz band to provide all participants in the telecom market with equal opportunities to develop 4G communication.

This solution allows the use of equipment for various mobile communication standards, including 3G and 4G, within a single software and hardware complex of the base station.

On November 29, 2017, the National Bank of Ukraine granted the subsidiary Kyivstar (StarMoney LLC) the status of payment infrastructure operator.

Under the terms of the Memorandum, the parties agreed to exchange statistical information to determine the number of domestic and foreign tourists moving through the territory of Ukraine.

At the end of January 2018, Kyivstar was included in the list of large companies that provide more than 70% of all revenues to the state budget of Ukraine.

From February 24, 2022, from the beginning of a new stage of Russian military aggression against Ukraine, Kyivstar implemented a package of measures to support society and subscribers.

[15] During the war, the company built more than 100 new mobile communication facilities and connected 1,150 bomb shelters in various cities of Ukraine to the free Internet.

[16] Kyivstar, together with other mobile operators, the Ministry of Digital Transformation of Ukraine, the State Service for Special Communications and Information Protection of Ukraine, the National Commission for State Regulation in the Fields of Electronic Communications, Radio Frequency Spectrum and Postal Services, together with the Ukrainian Association of Telecom Operators "Telas", launched national roaming.

[17] On December 12, 2023, Kyivstar experienced a significant service outage, which its CEO, Oleksandr Komarov, attributed to a powerful Russian cyberattack.

This attack, described as one of the largest against a civilian communications system, disrupted both phone and internet access for millions in Ukraine and involved efforts to destroy the company's virtual infrastructure.

In 2015, Kyivstar initiated the social and educational program Make Your Mark to support talented schoolchildren, programmers, startups, and young entrepreneurs.

The initiative provides support to Ukrainian students who show the best results in the exact disciplines: science, technology, including information, engineering, robotics, and mathematics.

On August 8, 2017, Kyivstar started providing its subscribers with non-tariffed access to the Prometheus application, a platform for open online courses that offers a free selection of educational programs from the best Ukrainian and foreign teachers.

As part of this initiative, the operator transferred UAH 1.6 million to the Tvoya Opora Charitable Foundation to provide medicines for children's heart surgeries.

Since 2017, Kyivstar has been supporting the GoCamp educational project in cooperation with the largest international volunteer initiative in Eastern Europe, GoGlobal.

On August 15, 2018, in Kharkiv, Kyiv, and Poltava regions, Kyivstar and the National Police of Ukraine launched the joint project "Search for Children".

In September 2019, the operator launched Ukraine's first online mobile literacy school "Smartphone for parents" - an interactive video course for the older generation with step-by-step instructions, as well as an information campaign to bridge the digital divide and break stereotypes about technology.

On February 11, 2020, together with the Ministry of Digital Transformation of Ukraine and the Office of the Presidential Commissioner for Children's Rights, Kyivstar launched an educational portal stop-sexting.in.ua and an information campaign #не_ведись.