Samsung Electronics and Apple (NASDAQ:AAPL) thoroughly dominated the smartphone market in 2012, so much so that, according to analysts, they ended 2012 as the only two companies with double-digit global market share. The two firms have also eaten up most, if not all, of the profits in the industry. The tough sledding for the likes of LG Electronics, HTC, Nokia (NYSE:NOK), Research In Motion (NASDAQ:RIMM) and Sony Mobile Communications appears likely to continue in 2013. However, all of those companies are sure to mount vigorous challenges to break out of the doldrums. Later this month RIM will kick off its comeback bid with the formal unveiling of its first BlackBerry 10 smartphones. Nokia and HTC are expected to announce new devices running Microsoft's (NASDAQ:MSFT) Windows Phone platform, while LG and Sony will likely introduce new high-end Android models. China's Huawei and ZTE are also expected to increase their presence in the smartphone market this year. Analysts warn that although Apple's iPhone and Samsung's Galaxy line of Android gadgets are at the top of the heap now, consumer tastes have proved fickle in the past and could shift in 2013. Article (sub. req.)