Callie R. Field serves as the President of the Business Group at T-Mobile US Inc., a position she has held since 2021. In this role, she is responsible for leading T-Mobile's business-to-business operations, overseeing the development and implementation of strategies to drive growth and enhance customer experience across various sectors. Her leadership has been instrumental in expanding T-Mobile's reach within the enterprise market, solidifying the company's position as a major player in the telecommunications industry. Prior to her current position, Field held several key roles within T-Mobile, showcasing her versatility and deep understanding of the telecommunications sector. She joined the company in 2005 and has since progressed through various leadership positions, including Senior Vice President of T-Mobile for Business and Vice President of Retail Sales. Her tenure at T-Mobile has been marked by significant achievements, such as the successful launch of innovative business solutions and the strengthening of partnerships with major corporations. Field's strategic vision and commitment to excellence have been pivotal in driving T-Mobile's business growth and enhancing its competitive edge. Field's professional background extends beyond T-Mobile, with experience in the retail and customer service industries. She holds a Bachelor of Science degree in Business Administration from the University of Southern California. Her career is characterized by a strong focus on customer-centric strategies and a passion for fostering a collaborative and inclusive work environment. Under her leadership, T-Mobile's Business Group continues to thrive, delivering cutting-edge solutions that meet the evolving needs of businesses in the digital age.