It's not exactly a secret Samsung had issues dealing with profit drops in the past, but the company started turning things around when they re-designed their devices to an extent and basically set a new path for themselves. Samsung has introduced the Galaxy S6 and Galaxy S6 Edge metal-clad smartphones last year, and has since then introduced a number of devices made out of metal which have helped the company to grow. The Galaxy S7 and Galaxy S7 Edge sales are doing wonders for the company considering the fact that their profits rose 42% YoY (in Q1 2016) according to Samsung's Q1 financial guideline.
That being said, it seems like Samsung is seeing strong sales in the US as well, at least according to the Counterpoint Research info. According to the report, the company has accounted for 28.8% sales in the US market in March, which means that Samsung took over the top spot in the country after 11 months. Samsung is, of course, followed by Apple, the Cupertino giant holds 23% market share, says Counterpoint. The company's Galaxy S7 and Galaxy S7 Edge devices are quite probably to blame for this as well, the company's new flagship devices have been selling like crazy all over the world, and have managed to push Samsung even further up the food chain. Truth be told, Apple still has to introduce their new iPhone (7) this year, and it will be interesting to see how Samsung and Apple stack up at the end of this year.
LG Electronics also did well in the US in March, the company accounted for 17.1% of market share, and that percentage will almost certainly increase at the end of this month when the LG G5 sales get into the mix. Now, as far as Chinese smartphone manufacturers go, things don't look as good in the US. Huawei accounted for just 1% of sales in March, and ZTE is trailing behind LG in fourth place with a 6.6% market share. Alcatel has also managed to squeeze itself in the top 5, as the company managed to hit the 5th place in terms of market share, the company accounted for 4.5% market share in March.