Sony Mobile has stated that the S-Force surround stereo speakers on the Xperia XZ2 are the loudest speakers to ever adorn an Xperia device. This is demonstrated clearly in the following video, which compares the speakers of the Xperia XZ2 against the XZ1.
It’s not clear from the video that the volume of both devices are at 100%, but we’ll give them the benefit of the doubt (otherwise there was no point in the demo). It’s frankly astounding how much louder and precise the Xperia XZ2 speakers are. Check out the video below and let us know how much you value speakers on a smartphone.