Some iPhone 7 Owners Report Hissing Sound While under Heavy Load

It is going to be just over 24 hours now since the new iPhones made their way into the hands of their customers. Like with every new major iPhone release, some iPhone 7 and iPhone 7 Plus customers are facing some hardware problems with the device.

First reported by Stephen Heckett of 512 Pixels, some iPhone 7 units are making a hissing sound while under heavy load. Several users have confirmed that they’re also getting the issue.

Heckett has uploaded a YouTube video with the recording of the sound:

The issue seems to be related to Apple’s new A10 Fusion chip, as it seems to only happen when the device is under heavy load, and appears to be coming from the back of the device near the Apple logo, which is the location of the chip.

It sounds as if it is coming from a fan, but that’s intriguing as the iPhone doesn’t have any fans. It is not clear how widespread the issue is at the moment, and whether the issue affects only iPhone 7, iPhone 7 Plus or both the devices. I haven’t faced this issue on my iPhone 7 Plus or iPhone 7.

iPhone 7 and iPhone 7 Plus are powered by Apple’s new quad-core A10 Fusion chip, which uses two performance optimized cores when high performance is called for, and when it’s not, it uses two energy-efficient-optimized cores.

It remains to be seen if Apple will be able to fix the issue with a software update. But when Heckett reported the issue to Apple’s customer support, AppleCare told him to visit an Apple Store to get a replacement, suggesting that it’s a hardware defect.

Does your iPhone 7 or iPhone 7 Plus make a hissing sound when under heavy load? You could try by either launching a graphic intensive game or running Geekbench Benchmarks using the GeekBench 4.0 app (iTunes link).

Here are some responses from iPhone 7 owners about the hissing sound:

[via 9to5Mac]