The South Korean manufacturer also saw a 27 per cent increase in operating profit in July, August and September
Smartphone manufacturer LG saw a 24 per cent increase in sales of mobile devices in the third quarter of 2013, compared to the same period last year.
Revenues for July, August and September totalled KRW 3.05 trillion (£1.8 billion), compared to KRW 2.5 trillion in Q3 last year.
The South Korean company shipped 12 million smartphones in the period, down from 14 million in Q3 2012.
It said profitability and average selling price were affected by increased competition and higher marketing costs.
Nevertheless, LG as a whole saw a 27 per cent increase in Q3 operating profit, to KRW 217.80 billion (£127 billion) compared with the same period last year.
The company said it plans to focus on increasing sales of premium products such as the LG G2 smartphone during the peak holiday season, and maximise sales of 3G and mid-tier devices such as the L II Series and F Series.