OUR COMPANY OUR GOVERNANCE OUR PEOPLE OUR COMMUNITIES THE ENVIRONMENT THE NUMBERS AND SMALL PRINT The Environment Ensuring connectivity for more than 100 million people requires a substantial investment in infrastructure, real estate, and our supply chain―all of which can have an impact on the environment. That’s why T-Mobile is taking ambitious steps to operate more sustainably to create a more sustainable future for everyone. We’re proud to be making real, measurable progress, including being the first in the U.S. wireless industry to be powered with 100% renewable electricity. We also achieved our science-based targets (SBTs) four years ahead of schedule, and we’re working to reduce waste and responsibly manage the lifecycle of our products. By mobilizing our resources, people, and partnerships, we can be an unstoppable force for good for the planet. 2021 Highlights 11.6M customer devices reused, resold or recycled A- on the CDP Climate Change assessment Achieved SBT: 97% reduction in combined absolute scope 1 & 2 GHG emissions from 2016 levels Achieved SBT: 16% reduction in scope 3 emissions per customer from 2016 levels energy reduction of 14%+ (MWh) per PB of data from 2019 levels $1.6 M donated to The Nature Conservancy since 2018 78% of our new wireless handset models certified through UL ECOLOGO® and EPEAT 2021 CORPORATE RESPONSIBILITY REPORT 53 100% of our electricity is sourced from renewable energy viii viii T-Mobile matches its own annual electrical usage with renewable energy from a portfolio of sources including: virtual power purchase agreements, a green direct program, renewable retail agreements, and unbundled REC purchases.

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