Problems exporting a JT number to the new Co-Op mobile network should be over by mid March.
The competition and regulatory authorities in Guernsey and Jersey have worked together with JT to tackle the problem.
But, they say it is disappointing that they have had to intervene.
Mobile Number Portability is crucial to encouraging competition because it means an individual can change provider but still keep their number.
The regulatory authorities say JT originally gave them a May 2026 deadline to resolve the problem but that has now been brought forward to 17 March '26.
Tim Ringsdore, who heads up the JCRA, says it was essential to resolve the problem as soon as possible:
"The earlier implementation date will provide JT customers with an additional choice of mobile provider sooner than previously expected.”
Work on Guernsey's Victor Hugo Centre may begin by Easter '27
Channel Islanders in the Middle East told to follow local warnings
Freehold of Guernsey's Premier Inn for sale
Unprecedented demand for cesspit emptying in Guernsey
Food will not be exempt from GST in Guernsey
Victor Hugo Centre fund reaches £7.5M
"We want our schools to be smartphone-free environments"
Assisted dying will be offered in Jersey
