Apple Inc. (NASDAQ:AAPL) has seen its share price tumble since hitting a record high last September on the day that the iPhone 5 was released. There are two main reasons why the stock has come under pressure recently: concerns about falling gross margin, and rising competition.

However, Apple's gross margin is likely to stabilize around its recent level (just below 40%), and Apple Inc. (NASDAQ:AAPL)remains the premiere brand for high-end consumer electronics devices. This strength will soon return Apple to solid earnings growth. Long-term investors need to see beyond day-to-day share price movements; from a long-term perspective, Apple's prospects remain bright.

Margins are correcting, not deteriorating Investors were shocked during the company's October conference call when Apple Inc. (NASDAQ:AAPL) CFO Peter Oppenheimer projected gross margin of 36% for the first quarter of the 2013 fiscal year. In the year-ago quarter, Apple had posted a 44.7% gross margin. Apple's management explained the drop primarily by pointing to the confluence of multiple product launches in September and October of 2012. Launch costs and low initial yields were to dilute gross margin.

Apple Inc. (NASDAQ:AAPL)'s October forecast was very conservative, as has been typical for the company in the past.  Still, when Apple reported results last week, gross margin was 38.6%, down 610 basis points year over year. However, while most analysts and investors have talked about Apple's gross margin deteriorating, it is more accurate to say that gross margin is correcting. The chart below shows that Apple's gross margin last quarter was well within the company's historical range.

Apple Quarterly Gross Margin, courtesy of YCharts.

Last year's spike in gross margin to well above 40% was an aberration. Gross margin was boosted significantly by the launch of the iPhone 4S, which was very popular despite being quite similar to the iPhone 4. The iPhone 4S did not face the same launch costs as most new products because it retained the same form factor as the iPhone 4, which had been in production for 16 months. As a result, Apple Inc. (NASDAQ:AAPL)'s gross margin soared past previous highs.

Apple is unlikely to return to 2012's record-high gross margin. On the other hand, Apple's gross margin is also unlikely to fall further. The year-over-year drop to 38.6% last quarter merely returned Apple's gross margin to the typical range of 38%-41%. So long as Apple can continue to generate sales growth, the company should return to strong earnings growth later this year.

Apple still rules the high-end The other major concern among Apple investors is that competitors are gaining share in the smartphone market, where Apple generates the vast majority of its profits. Last September, Google Inc (NASDAQ:GOOG) announced that over 500 million Android devices had been activated since 2008, the vast majority of which were smartphones. In the same period of time, Apple Inc. (NASDAQ:AAPL)sold roughly 250 million iPhones. Moreover, the gap appears to be growing. Samsung alone plans to ship 350 million smartphones this year, more than double the likely sales volume of Apple's iPhone lineup. Most of these will be Android devices, although Samsung is also launching a variety of models running Microsoft Corporation (NASDAQ:MSFT)'s Windows Phone 8 OS.

However, Samsung and other Android manufacturers are driving higher unit volumes by expanding into low-margin budget smartphones. Apple is not really interested in competing in that market segment. By contrast, in the high-end, where virtually all of the smartphone market's profit is earned, Apple is still king.