However, if the entire OS becomes unresponsive, there may be no remaining way to tell the locked up software to gracefully restart itself. Historically, an unresponsive iOS device could be force-quit by holding down the Wake and Home buttons, but on iPhone 7 and iPhone 7 Plus, the Home button is no longer a physical hardware button. Instead, it's a flat sensor that solely responds to capitative touch while imaging fingerprint patterns, both of which are purely controlled in software by the operating system.
That means the iPhone 7 Home button, just like the 3D Touch display, can only be triggered by a finger and not by physical pressure from a non-capacitative object. The new iPhones also differ from Apple's recently introduced iPad Pro models in that their displays (like the new Home button) lack a physical pressure-sensitive layer, meaning they will not work Apple Pencil. Just one word. Are you listening, Apple's trademark for the concept of fusing capacitive finger taps and haptic feedback to create a synthetic experience that emulates interaction with a physical device.
The Taptic Engine is broadly tasked with providing haptic feedback for system controls and interactions, including subtle vibration feedback for the Home button, as well as for 3D Touch events triggered on the display area. During the setup process, iPhone 7 users are promoted to pick a preferred level of haptic intensity for the Home button from three different levels. This setting (shown below) can be changed at any time in Settings under General / Home Button.
Haptics on iPhone 7 work similarly to their implementation on Apple Watch, where micro vibrations provide a variety of discreet feedback sensations as an alternative to audibly beeping or flashing lights. Apple has also exposed a new haptic API exclusively for developers targeting the new hardware on iPhone 7, enabling them to incorporate haptic feedback into their own apps. Several third party apps have already taken advantage of this to provide rumble feedback in games and other novel examples of non-auditory vibration feedback in their third party apps.
This is usually the case if certain bugs have infiltrated the operating system, causing the audio system and the microphone to become dysfunctional. Should this be the case, a system reset might be necessary so as to eliminate the culprit. With the iPhone’s default settings, everything should work as intended.
But that is not always the cases especially if end-users make some modifications or reconfigure some settings according to their preferences. When something gets modified or changed incorrectly, there is a higher chance that certain features would fail to work. This is possibly the case when the iPhone microphone stops working or when unusual symptoms suddenly surface after changing certain menu options for audio functions either on specific audio app or the iPhone’s general audio settings.
Some iPhone accessories especially those that are made by third-party manufacturers can also affect the quality of audio output from the microphone. Among the symptoms that are linked to the use of incompatible third-party iPhone accessories are static sounds, distant sound during phone calls, or no sound coming from the microphone at all.
These can make you think that the microphone is somehow becoming dysfunctional but actually it’s inflicted by the use of certain accessories on the iPhone like casing. Hardware damage from hard fall or liquid exposure on the iPhone is considered the worst among the possible causes. If the hardware is to blame on your iPhone’s microphone problem, your chances of getting it fixed is definitely lower than software-related causes. Microphone issues that are triggered by faulty hardware or damaged audio components would already require a technician’s aid for repair or replacement of defective components.
That being said, you should immediately take your iPhone to an authorized service center especially if you’re certain that the problem is caused by hardware damaged. Otherwise, you may opt to take your chances and try any applicable workarounds including the ones highlighted below. How to deal with software-related microphone problems on the iPhone 6s Plus,
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