Overview

• The outage began around 7:45am on June 25 and peaked at nearly 10,000 reports on Downdetector as many users nationwide lost voice and text capabilities through the day.
• Three UK confirmed that mobile data remained operational, directing customers to place calls via third-party messaging apps to maintain communication.
• Subsidiaries iD Mobile and Smarty also experienced the disruption, raising customer concerns about accessing emergency services during the outage.
• The operator apologised for the inconvenience, offered no timeline for restoration, and said engineers are still investigating the fault’s cause.
• The outage intensified scrutiny of network reliability following Three’s merger with Vodafone, which has not yet enabled shared roaming between the two platforms.