Exclusive | T-Mobile Hacked in Massive Chinese Breach of Telecom Networks - WSJ The Wall Street Journal
T-Mobile Hack Linked To Chinese State Sponsored Hackers Forbes
T-Mobile confirms it was hacked in recent wave of telecom breaches BleepingComputer
T-Mobile Network Reportedly Breached in Chinese Hacking Campaign PYMNTS.com
T-Mobile’s Network Breached in China Hacking Operation, WSJ Says Bloomberg
Chinese State-Sponsored 'Salt Typhoon' Hackers Also Breached T-Mobile PCMag
Chinese Cyber Attack Hits U.S. Telecom Firms: T-Mobile, AT&T, and More Compromised TmoNews
T-Mobile Hacked - China Launched Massive Cyber Attack on U.S. Telecom Networks CybersecurityNews
It seems T-Mobile was also hacked in massive telecomm breach by China-linked hackers Android Authority

T-Mobile hack linked to Chinese breaches of telecom networks TechCrunch
T-Mobile’s Network Breached as Part of Chinese Hacking Operation Insurance Journal
T-Mobile Also Targeted in Chinese Telecom Hacking Campaign SecurityWeek