T-Mobile US, Inc. — Ethics Grade D

T-Mobile US, Inc. receives an overall ethics grade of D (34/100) on CancelCo's corporate accountability database. Sector: Telecommunications. Market cap: Large Cap.

Category scores

• labor: 45
• privacy: 12
• consumer: 30
• environment: 88
• humanRights: 55

Documented incidents (3)

• Massive Data Breach (high, 2021) — The company suffered a cyberattack exposing the personal data of approximately 76.6 million customers, including SSNs and IMEI data. T-Mobile later agreed to a $350 million settlement for class-action lawsuits following the incident.
• Worker Coercion Ruling (medium, 2017) — The National Labor Relations Board ruled that T-Mobile had maintained illegal workplace rules that discouraged employees from discussing wages and working conditions. The company was ordered to rescind these restrictive policies.
• Ongoing Security Vulnerabilities (high, 2023) — T-Mobile disclosed its eighth significant data breach since 2018 in early 2023, where an API vulnerability exposed data of 37 million accounts. Critics argue the company lacks adequate investment in cybersecurity infrastructure.

Documented good deeds

• RE100 Achievement — T-Mobile became the first major US wireless carrier to source 100% of its total electricity from renewable energy sources.

Ethical alternatives

• Consumer Cellular — Consistently higher customer satisfaction ratings and fewer data security scandals.