| Company | Headline | Fine | Source | Date | Contact | StockMarket |
| T-Mobile US | T-Mobile to pay $200 million fine to resolve FCC subsidy investigation | $200,000,000 | Reuters | 04 Nov 2020 | CEO email address for T-Mobile US | NASDAQ100 |
| T-Mobile US | Attorney General Becerra Announces Settlement Ending the State?s Challenge to T-Mobile, Sprint Merger | $15,000,000 | California Attorney General | 11 Mar 2020 | CEO email address for T-Mobile US | NASDAQ100 |
| T-Mobile US | FCC Proposes $91.6M Fine against T-Mobile in Location Information Case | $91,630,000 | Federal Communications Commission | 28 Feb 2020 | CEO email address for T-Mobile US | NASDAQ100 |
| T-Mobile US | A.G. Underwood And Acting Tax Commissioner Manion Announce Record $330 Million Settlement With Sprint In Groundbreaking False Claims Act Litigation Involving Unpaid Sales Tax | $330,000,000 | New York Attorney General | 21 Dec 2018 | CEO email address for T-Mobile US | NASDAQ100 |
| T-Mobile US | FCC REACHES $40 MILLION SETTLEMENT WITH T-MOBILE FOR RURAL CALL COMPLETION VIOLATIONS | $40,000,000 | Federal Communications Commission | 16 Apr 2018 | CEO email address for T-Mobile US | NASDAQ100 |
| T-Mobile US | FCC SETTLES WITH SPRINT & MOBILITIE FOR $11.6 MILLION REGARDING WIRELESS STRUCTURES BUILT WITHOUT REQUIRED REVIEW | $10,000,000 | Federal Communications Commission | 10 Apr 2018 | CEO email address for T-Mobile US | NASDAQ100 |
| T-Mobile US | FCC Reaches $48m Settlement with T-Mobile Over Unlimited' Data Plans | $48,000,000 | Federal Communications Commission | 19 Oct 2016 | CEO email address for T-Mobile US | NASDAQ100 |
| T-Mobile US | Sprint Will Pay $2.95 Million Penalty to Settle FTC Charges It Violated Fair Credit Reporting Act | ?2,950,000 | Federal Communications Commission | 21 Oct 2015 | CEO email address for T-Mobile US | NASDAQ100 |
| T-Mobile US | T-Mobile to Pay $17.5 Million to Resolve 911 Outage Investigation | $17,500,000 | Federal Communications Commission | 17 Jul 2015 | CEO email address for T-Mobile US | NASDAQ100 |
| T-Mobile US | Sprint and Verizon to Pay $158 Million to Settle Allegations of 'Mobile Cramming' | $68,000,000 | Massachusetts Attorney General | 12 May 2015 | CEO email address for T-Mobile US | NASDAQ100 |
| T-Mobile US | Sprint Communications, Inc. Agrees To Pay $15.5 Million To Resolve Allegations Of Overcharging Law Enforcement Agencies For Court-Ordered Wiretaps | $15,500,000 | California Attorney?s Office | 09 Apr 2015 | CEO email address for T-Mobile US | NASDAQ100 |
| T-Mobile US | T-Mobile to Pay $90 Million to Settle ?Cramming? Allegations | $90,000,000 | Bloomberg (paywalled0 | 19 Dec 2014 | CEO email address for T-Mobile US | NASDAQ100 |
| T-Mobile US | Sprint To Pay Record $7.5M To Resolve Do-Not-Call Investigation | $7,500,000 | Federal Communications Commission | 19 May 2014 | CEO email address for T-Mobile US | NASDAQ100 |
| T-Mobile US | State Treasurer and Attorney General Settle with Sprint over Iowans' Uncashed Rebate Checks | $22,000,000 | Iowa Attorney General | 12 Feb 2010 | CEO email address for T-Mobile US | NASDAQ100 |