In china , apple currently sells its iphone 4 only through china unicom .

目前，中国联通（ChinaUnicom）是苹果iPhone4在中国的独家经销商。

China telecom and china unicom also operate fixed-line businesses .

中国电信和中国联通还运营固话业务。

A china unicom spokeswoman also declined to comment .

而一中国联通发言人亦未做评论。

The combined company will be called unicom .

网通与联通合并后的公司将称为联通。

China unicom is the only operator authorised to sell the apple iphone in mainland china .

中国联通是苹果iphone手机在中国大陆唯一一家授权运营商。