Spark mobile customers have been hit by another big outage this afternoon.

The company says there was a 'brief issue' this afternoon, with engineers responding immediately.

Many users have reported not being able to connect calls at all.

Spark says things should be getting back to normal, though there are still some lingering issues.

The network was hit by a major outage exactly two weeks ago, which lasted a number of hours and had Spark engineers baffled.