     3G- (    2009 ),      - China Mobile, China Unicom  China Telecom, -        .       -  ,  China Economic Net. /n        ,   3G-  40  .   ,   150 . /n        ,   .  /n      ,  -,     .      ,        .     3G-    ,    2G.   ,       ,        ? /n    .  2011    3G-      75  78  .      ,        . ( , "    , , -       !") /n 
