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Profit for January-March was 25.8 billion yuan ($4.10 billion) compared with 24.8 billion yuan a year ago, while revenue rose 0.8 percent to 166.7 billion yuan.
The company had 672 million 4G customers at end-March, with handset data traffic in the first quarter rising 139 percent on year, China Mobile said in a filing to the Hong Kong stock exchange.
China's state-owned telecom operators have been asked to continue raising service speed and cut rates as Beijing seeks to deepen reforms in the sector.