Dtac’s CEO, Jon Eddy Abdullah, has stepped down and the company’s vice chairman, Sigve Brekke (pictured), has been named interim CEO.

Brekke served as the Thai operator’s CEO from 2005 to 2008. He will continue in his role as the executive VP and head of Telenor Group’s Asia operations, Telenor said in a statement.

Dtac, one of six Telenor operations in Asia, has 28 million connections and a 29 per cent market share. Although its market share has been fairly steady over the past 18 months, it has been picking up only 12-15 per cent of new additions over the past year. It is Thailand’s second-largest operator, according to GSMA Intelligence.

In Q3 it added almost one million postpaid customers, most of whom were converted from prepaid. Now 17 per cent of its user base is postpaid, compared with 11 per cent for market leader AIS and 14 per cent for True Move.

The chairman of dtac, Mr. Boonchai Bencharongkul, said the company has started the process of appointing a new CEO.