Orange has issued a statement saying that the data outage that began on Wednesday has now been rectified.
On Thursday, ZDNet UK reported on the problems that saw some Orange customers without 3G data access across areas of the country.
"Further to some data access problems witnessed on our network yesterday, we can confirm that normal service has been fully restored," said an Orange spokesperson in a statement on Friday.
However, some Twitter users are still reporting problems accessing the data network.
According to Orange, the outage was caused by "an unusual software issue" that was exacerbated by "separate and localised" hardware failure which resulted in "some, but not all, of our mobile data customers having problems accessing the mobile Internet."