Multicore isn&#x27;t free in a battery constrained device, and yet devices <i>are</i> multicore. The fact that you don&#x27;t have an 8 core phone doesn&#x27;t mean multicore concurrency isn&#x27;t used.<p>There are all sorts of things that benefit from multicore concurrency; a simple example is keeping data handling (including SQLite query execution, which has a non-zero cost) off of the UI thread that&#x27;s responsible for keeping table scrolling glossy smooth.<p>You may have been writing native code, but you clearly haven&#x27;t been shipping high gloss end-user applications on mobile devices.