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NEWS Stamford , Connecticut - July 30 , 2021 - Charter Communications , Inc. ( along with its subsidiaries , the " Company " or " Charter " ) today reported financial and operating results for the three and six months ended June 30 , 2021 . Key highlights : ● ● ● ● Charter COMMUNICATIONS ● ● Charter Announces Second Quarter 2021 Results Second quarter total residential and small and medium business ( " SMB " ) customer relationships increased by 332,000 . As of June 30 , 2021 , Charter served a total of 31.8 million residential and SMB customers , with 1.3 million net new customer relationships added over the last twelve months . Second quarter revenue of $ 12.8 billion grew by 9.5 % year - over - year , driven by residential revenue growth of 6.8 % , mobile revenue growth of 67.5 % and advertising sales revenue growth of 65.1 % . • Second quarter Adjusted EBITDA¹ of $ 5.0 billion grew by 11.8 % year - over - year . Net income attributable to Charter shareholders totaled $ 1.0 billion in the second quarter . Second quarter capital expenditures totaled $ 1.9 billion and included $ 124 million of mobile - related capital expenditures . Second quarter free cash flow¹ of $ 2.1 billion grew by 10.8 % year - over - year . During the second quarter , Charter purchased approximately 6.1 million shares of Charter Class A common stock and Charter Communications Holdings , LLC ( " Charter Holdings " ) common units for approximately $ 4.0 billion . Second quarter total residential and SMB Internet customers increased by 400,000 . As of June 30 , 2021 , Charter served a total of 29.6 million residential and SMB Internet customers , with 1.5 million total Internet customers added over the last twelve months . Second quarter total residential and SMB mobile lines increased by 265,000 . As of June 30 , 2021 , Charter served a total of 2.9 million mobile lines , with 1.2 million mobile lines added over the last twelve months . " Our operating strategy continues to deliver strong customer and financial growth despite an operating environment that has yet to return to normal , " said Tom Rutledge , Chairman and CEO of Charter . " And the opportunity at Charter is what it has always been to continue to create customer relationships with our high - quality connectivity services , delivering value for consumers and our shareholders over time . " 1. Adjusted EBITDA and free cash flow are non - GAAP measures defined in the " Use of Adjusted EBITDA and Free Cash Flow Information " section and are reconciled to net income attributable to Charter shareholders and net cash flows from operating activities , respectively , in the addendum of this news release . 1