Apple made many improvements and changes to the iPhone 7, but one of the major changes is the new home button. The old physical button that can be pressed has been changed into a solid, non-physical pressure-sensitive button.

According to MacRumors user iwayne, the new iPhone 7 home button comes with a quick workaround in case it suddenly conks out. He uploaded a photo of an iPhone 7 lock screen with a message saying the home button may require service. This message comes up if the system detects something wrong.

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The quick fix is an onscreen home button which is automatically shown on the smartphone's display, allowing the user to keep using the phone until the home button is repaired.

This onscreen home button is not a new iPhone feature. It can be activated through the Accessibility setting. The onscreen home button offers several functions to the user and can be dragged anywhere on the screen. Apple decided to replace the physical home button with a non-physical one to lessen the chances of failure compared to old home buttons that have mechanical parts. The new home button on the iPhone 7 also has an IP67 waterproof rating. 

The instant onscreen activation of the new iPhone 7 home button provides extra convenience to users. However, the only disadvantage is that users need to make skin contact with the phone for it to be activated. This can be problematic during the winter when people need to use gloves.