The mainland's dominant mobile-phone operator, China Mobile, says the July 21 resignation of vice-chairman Cui Xun as non-executive director and vice-chairman concludes the revamp of the telecommunications sector. Mr Cui was the sole board representative of the Directorate-General of Telecommunications - the fixed-line operating arm controlled by the Ministry of Information Industry. It previously held 43 per cent of China Mobile's immediate parent, China Telecom (Hong Kong) Group through China Telecommunications Corp. Mr Cui, 62, is director-general of the Guangdong Posts and Communications Administration and deputy chief engineer of the Guangzhou Telecommunications Bureau in Guangdong province. A China Mobile official said Mr Cui's departure was a result of personnel reassignment and a further step towards rationalising the organisational and corporate structure involving China Mobile Corp and China Telecommunications Corp. Under the shareholding restructuring announced in May, China Mobile Communications acquired a 43 per cent interest in China Telecom (Hong Kong) Group from sister company China Telecommunications Corp. It gave China Mobile Communications 100 per cent ownership of China Telecom (Hong Kong) Group, which holds about 75 per cent of SAR-listed China Mobile. Restructuring began in February last year, based on Beijing's plan to restructure its telecommunications industry into four independent businesses - fixed-line communications, mobile operations, paging and satellite communications. Mr Cui's resignation would not have an impact on the company's operations, the China Mobile official said. It is understood Mr Cui's departure also avoided any potential conflict of interest due to the fact China Mobile deals with China Telecom Corp in leasing fixed-line services. Shares in China Mobile lost HK$3.25 yesterday to finish at HK$68.50. Brokers said the recent slump in China Mobile's share price was partly because of worries Morgan Stanley Capital International (MSCI) may reduce China Mobile's weighting in its indices by calculating only the percentage of China Mobile's public float. Last Friday, MSCI said it was reviewing the free-floating issues of the companies comprising the index.