Samsung Electronics said its profits surged 76 per cent in the last three months of 2012, on the strength of its booming smartphone business.
Net income rose to a record US$7 trillion won up from US$4 trillion in the same period a year earlier, beating analysts' expectations.
The Korean firm said its mobile profits more than doubled over the same period.
Last year, Samsung became the world's biggest smartphone maker, overtaking Apple, its main rival in the sector.
Samsung did not provide data on the number of smartphones it had shipped, but analysts estimate it sold 63 million instruments in the quarter.
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