DetroitBORG | iPhone 7 Hissing Sound? @DetroitBORG | Uploaded 8 years ago | Updated 2 days ago
This sound can be heard when the device is under load, but it's so quiet you have to put it against your ear to hear it. But this gives you an idea of what you might hear.

This is recorded with the phone right against a microphone, not from the distance shown in the b-roll overlaying the audio.

It's not an issue at all, phone is awesome!