Samsung Electronics claims to have earned a quarterly profit of $8.3 billion, as it sold close to 500 handsets a minute and as demand for its flat screen technology soared.
That run of five straight record quarters may end in January-March on weaker seasonal demand, though a strong pipeline of smartphones - the South Korean group's biggest earner - and improving chip prices have eased concerns that earnings growth could slow this year.
Investors are a bit concerned that Samsung's momentum may slow in the first half.
"Investors are a bit concerned that Samsung's momentum may slow in the first half. The smartphone market is unlikely to sustain its strong growth as advanced markets are nearing saturation despite growth in emerging countries," said Kim Sung-soo, a fund manager at LS Asset Management.
Samsung has outpaced Apple - its biggest rival and biggest customer - despite the US firm's iPhone 5 launch, with sales momentum boosted by its Galaxy Note II phone-cum-tablet, or 'phablet', in the fourth quarter.
While Apple rolled out just a single new smartphone last year globally, Samsung bombarded the market with 37 variants tweaked for regional and consumer tastes, from high-end smartphones to cheaper low-end models.
By comparison, Taiwan's HTC Corp released 18 models, Nokia 9 and LG Electronics 24.
HTC on Monday said its fourth-quarter profit slumped more than 90 per cent as its sales continue to trail those of the Galaxy range and the iPhone.
Samsung, valued at close to $230 billion, gave its October-December earnings guidance on Tuesday, ahead of the full earnings release expected by January 25.
A high note
Shipments of Samsung's flagship Galaxy S III, which overtook the iPhone 4S in the third quarter to become the world's best-selling smartphone, are likely to have slipped to around 15 million in the last quarter from 18 million in July-September, analysts estimate.
But sales of around 8 million Galaxy Note II 'phablets' should more than make up for that - pushing overall smartphone shipments to around 63 million.
"The Note was selling well, boosting fourth-quarter profit, while iPhone 5 sales were less than expected," said Song Myung-sub, an analyst at HI Investment & Securities.
"Samsung's profit will drop in the current quarter because of decreased phone profits. It will launch the Galaxy S IV only in March or April so, without new models, phone sales prices will fall this quarter. For the whole year, Samsung will launch new models faster than Apple and have the upper hand in the smartphone market."
The new Galaxy, widely expected to be released within months, may have an unbreakable screen and full high-definition quality resolution boasting 440 pixels per inch, as well as a better camera and a more powerful processor.
"Samsung's smartphone shipments are likely to grow even in a seasonally weak first quarter. The early launch of the Galaxy S IV would drive second-quarter growth momentum," said BNP Paribas Securities analyst Peter Yu, who predicts Samsung's 2013 operating profit will grow 25 percent to almost $35 billion.
Samsung is expected to increase its smartphone sales by more than a third this year, and widen its lead over Apple as it offers a broader range of mobile devices, said Neil Mawston, executive director at market researcher Strategy Analytics, which forecasts Samsung will sell 290 million smartphones this year, up from a projected 215 million in 2012.
Kim Sung-in, an analyst at Kiwoom Securities, sees Samsung shipping 320 million smartphones this year and doubling sales of its tablets to 32 million.
