Main points
- On April 21, Kyivstar customers encountered problems making calls due to a minor technical glitch, which the company has already fixed.
- Users also complained about problems with mobile signal and internet, but Kyivstar reported that the service was operating normally.
Kyivstar outage April 21, 2026 / Collage by Channel 24, photo used depositphotos
On the evening of April 21, Ukrainians began reporting a failure at Kyivstar. Not everyone can reach the operator's subscribers. However, the company explained what happened.
The details were collected by Channel 24 .
What is known about the Kyivstar outage on April 21?
People complain that they cannot reach the network when calling numbers from other operators. During the call, the message “call error” appears.
Call error during calls on Kyivstar / Screenshot of Channel 24
At the same time, it should be said that this problem is not for everyone. Channel 24 correspondents conducted an experiment and found that some people managed to make a call from Kyivstar to Kyivstar, while others also received a call error.
Kyivstar outage April 21, 2026 / Screenshot of Channel 24
But, for example, if you call Kyivstar subscribers via Telegram using Kyivstar mobile internet, the call goes through and the person on the other end of the wire hears the call. That is, the problem does not affect absolutely all users.
The outage occurred after 9 p.m. on April 21, and was noticed online. Users are also complaining about poor performance of Kyivstar's Wi-Fi network.
On the Downdetector website, which collects reports of problems with various sites, services, and applications, users also reported outages. 67 percent wrote that they had problems with voice calls, 16 percent with mobile signal, and 12 percent with mobile Internet.
In the evening, the number of such messages increased sharply and reached 138.
Problems with Kyivstar – information from Downdetector / Screenshot of Channel 24
How did Kyivstar explain the outage on April 21?
Tetyana Oksyutenko, head of communications at Kyivstar, explained in a comment to Channel 24 : there was a minor technical failure.
Today, some subscribers experienced difficulties with outgoing calls. The service has now been restored, and the company is operating as usual. We apologize for the temporary inconvenience,
– she said.
Other news about Kyivstar
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On March 5, Fire Point co-founder and chief designer Denis Shtilerman suggested that Russian drones could use the Internet connections of Ukrainian mobile networks. Tetyana Oksyutenko, in a comment for Channel 24, denied this information. She assured that the entire company's infrastructure regularly undergoes the necessary checks.
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On April 20, the company warned that scammers on social networks are posing as Kyivstar. They are offering subscribers to invest in 5G and stocks.
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On April 21, Kyivstar will begin to gradually abandon 3G technology in some settlements and transfer these frequencies to more modern 4G. This means that 3G will be turned off in the Kirovohrad region, Odesa, Poltava, and Vinnytsia regions.