Google’s YouTube apps for Android and iOS have helped the company triple advertising sales on mobile in the past six months, the company has said. Mobile ads now contribute an estimated $350 million to YouTube’s revenue, with around a quarter of the site’s 1 billion users accessing videos on smartphones and tablets.

The HTC One has been incredibly well received since it launched last month, but the handset was just too late to have a positive impact on HTC’s profits during the first quarter. The Taiwanese company made just $2.8 million in profit during the three-month period, which is a 98% drop from the $152 million it saw a year ago.

Samsung has today announced its estimated earnings for Q1 2013, and it looks like the Korean electronics giant is set for another record quarter, exceeding Wall Street expectations. The company has forecast a 53% rise in profit to 8.7 trillion won ($7.7 billion) for the three-month period between January and March, driven by smartphone sales.

Ad impressions reached a record high during the fourth quarter of 2012, according to data from Opera’s latest State of Mobile Advertising report, with revenue to publishers more than twice that of any previous quarter throughout the year. The figures show that Android continues to increase its share of the market, but it’s got a long way to go before it topples iOS, which boasts a whopping 41.91% share.

LG has today announced its financial results for the fourth quarter of 2012, during which the South Korean company sold 15.4 million cellphones and saw a 2% increase in sales and revenue of $2.58 billion. 8.6 million of those devices were Android-powered handsets, with “premium LTE smartphones” like the Optimus G and the Optimus Vu 2 leading the way.