TOP 10

REVENUE : US $ 78.6BN EMPLOYEES : 71,000 CEO : MIKE SIEVERT FOUNDED : 1999

T-Mobile has reused , resold , or recycled 11.7 million of its customer devices , contributing to its circular economy practices . The company has also achieved a 20 % reduction in total Scope 1 , 2 , and 3 emissions since 2020 , marking significant progress towards its net-zero emissions goal by 2040 . Overall T-Mobile has demonstrated some impressive improvements in energy efficiency and , today , continues investing in its product circularity . 44 May 2024