Initiates first phase of the switch-off

Intends to initiate a Phase 2 investigation

The deal has collapsed

First phase of investigation will last up to 40 working days

Labels the potential deal as "dangerous"

After months of talks, the deal has been agreed

Argues that it could be a security issue for the UK

CK Hutchison will hold the remaining 40 percent stake

As Vodafone-Three merger in the UK continues to progress

Transaction was delayed due to CMA approval

A merger between the two would create the UK's biggest mobile operator

UK telco warns of higher prices and impacted 5G roll-out