If recent history is any indication, Apple (AAPL +0.69%) will unveil its next iPhone in September. The iPhone 6S is expected to resemble its predecessor, but sport improved internals, a better camera, and additional features, most notably Force Touch.

Apple's next smartphone, however, will have to contend with a wave of competition. In recent weeks, Google's (GOOG +1.87%) (GOOGL +1.82%) Android partners have unveiled several new handsets, and more could be on the way. The following slideshow offers a rundown of the various smartphones that should compete with the iPhone 6S, including devices from Samsung (NASDAQOTH: SSNLF), HTC (NASDAQOTH: HTCXF), LG (NASDAQOTH: LGEAF) and BlackBerry (BBRY -4.04%).

These Are The New Android Phones That Could Challenge Apple's iPhone 6S This Fall from The Motley Fool