A Single Speaker
One of the less visually noticeable differences between the iPhone Air and the rest of the family is that Apple’s ultra-slim model only packs in a single speaker, and it’s located in the earpiece.
This has a greater impact than just lacking stereo audio. Most early reports suggest that the iPhone Air won’t get nearly as loud as any other recent iPhone models. The sound is also said to be flatter.
It’s seemingly fine for casual use. However, if you like to play games or watch movies on the iPhone, the audio output will likely sound somewhat anemic.
That said, it’s also a non-issue if you typically use AirPods or other headphones with your iPhone.