| Dec 31, 2017 | Dec 31, 2018 | Dec 31, 2019 | Dec 31, 2020 | Dec 31, 2021 | Dec 31, 2022 | Dec 31, 2023 | Dec 31, 2024 |
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| Service revenues | 9,105 | 8,526 | - | - | - | - | 3,576 | 3,846 |
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| Revenue from sale of goods | 244 | 427 | - | - | - | - | 19 | 25 |
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| Other revenue | 125 | 133 | - | - | - | - | 103 | 133 |
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| Total operating revenues | 9,474 | 9,086 | - | - | - | - | 3,698 | 4,004 |
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| Other operating income | - | - | - | 5 | 4 | 1 | 1 | 1 |
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| Service costs | 1,879 | 1,701 | 1,554 | 1,508 | 1,393 | 448 | 423 | 488 |
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| Cost of equipment and accessories | 260 | 415 | 479 | 382 | 487 | 28 | 18 | 27 |
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| Selling, general and administrative expenses | 3,748 | 3,697 | 2,965 | 2,641 | 2,579 | 1,533 | 1,646 | 1,799 |
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| Depreciation | 1,454 | 1,339 | 1,652 | 1,576 | 1,545 | 557 | 527 | 529 |
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| Amortization | 537 | 495 | 394 | 343 | 308 | 221 | 208 | 199 |
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| Impairment (loss) / reversal, net | - | - | - | - | 20 | -107 | -6 | 3 |
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| Gain / (loss) on disposal of non-current assets | - | - | -43 | -37 | -17 | -1 | 46 | 5 |
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| Gain on disposal of subsidiaries | - | - | - | - | - | - | - | 145 |
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| Operating profit | 1,506 | 554 | 2,019 | 635 | 1,544 | 1,163 | 929 | 1,110 |
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| Finance costs | 935 | 816 | 892 | 683 | 690 | 583 | 531 | 495 |
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| Finance income | 95 | 67 | 53 | 23 | 16 | 32 | 60 | 49 |
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| Other non-operating gain, net | - | - | - | 111 | 34 | 9 | 20 | 31 |
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| Foreign exchange gain | - | - | - | - | - | - | - | 9 |
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| Profit before tax from continuing operations | -24 | -248 | 1,181 | 26 | 908 | 802 | 559 | 704 |
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| Income taxes | 472 | 369 | 498 | 342 | 258 | 69 | 179 | 217 |
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| Profit from continuing operations | -496 | -617 | 683 | -316 | 650 | 733 | 380 | 487 |
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| Profit (loss) from discontinued operations | - | -300 | - | - | 151 | - | -2,830 | - |
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| Profit / (loss) for the period | -496 | 362 | 683 | -316 | 801 | -9 | -2,450 | 487 |
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| The owners of the parent (continuing operations) | -483 | -397 | 621 | -349 | 605 | 656 | 307 | 415 |
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| The owners of the parent (discontinued operations) | - | 979 | - | - | 69 | -818 | -2,835 | - |
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| Non-controlling interest | -13 | -220 | 62 | 33 | 127 | 153 | 78 | 72 |
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| Basic earnings (loss) per share from continuing operations | - | - | - | - | 0.35 | 0.37 | 0.17 | 0.23 |
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| Diluted earnings (loss) per share from continuing operations | - | - | - | - | 0.35 | 0.37 | 0.17 | 0.23 |
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| Basic earnings (loss) per share from discontinued operations | - | - | - | - | 0.04 | -0.46 | -1.61 | - |
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| Diluted earnings (loss) per share from discontinued operations | - | - | - | - | 0.04 | -0.46 | -1.61 | - |
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| Basic gain (loss) per share (in USD per share) | - | - | - | - | 0.39 | -0.09 | -1.44 | 0.23 |
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| Diluted gain (loss) per share (in USD per share) | - | - | - | - | 0.39 | -0.09 | -1.44 | 0.23 |
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