iPhone Duo: Volume Buttons Move – and More Tricks

TVS News AI, editorially supervised, presents iPhone Duo: Volume Buttons Move – and More Tricks.

The first thing you are likely to notice about the iPhone Duo is not the display, but the design: When closed, the foldable is quite wide and low at the same time, like a passport. Adjusting to it begins from there. Apple has implemented some of the changes in iOS, while others simply require new habits. This is particularly noticeable with the volume buttons, silencing the device and forcing a restart.

The Volume Buttons No Longer Sit Above and Below

The volume

On regular iPhones, you press the two buttons on the side to turn the volume up or down. On the iPhone Duo, this familiar pattern works neither on the outer display nor on the inner display when used in landscape. There, the direction is sideways: left decreases the volume, right increases it.

You can, however, dynamically adjust the buttons to suit how you hold the device. To do so, open Settings and go to “Sounds & Haptics”. On the first screen, you can turn off a switch that locks the buttons in place. iOS then adapts the layout to the way the device is being held.

The new assignment

If you hold the iPhone Duo vertically, the upper button increases the volume and the lower button decreases it. In a sideways position, the horizontal logic remains: left decreases the volume, right increases it. Only when you lock the screen orientation through Control Center does the assignment depend on the type of orientation lock.

This makes it possible to adapt the unfamiliar layout to your habits in practice. However, the key difference from previous controls remains: In this model, the two buttons above and below do not automatically have the same function as they do on regular iPhones.

Silencing the Device Without an Action Button

The Control Center route

The iPhone Duo has no Action button that you can press to silence it. Instead, you set the alarm in Control Center to vibration only. You can access Control Center by tapping the display area showing the battery and network status next to the time, or by swiping down on the screen in that area.

This is a direct replacement for the missing hardware button. It also covers both methods available in the screen area: tapping the status display or swiping down at that point. This is particularly helpful with the new foldable because you can access vibration mode immediately after opening it without having to look for an Action button.

A Hard Reset Requires a Fixed Button Sequence

The restart combination

A forced restart on the iPhone Duo also does not work as it does on a regular iPhone. The guide recommends first opening the device and holding it vertically, so that the Touch ID button is at the top. Then briefly press the upper volume button, followed briefly by the lower volume button.

Now hold down the Sleep/Wake button, also known as the side button, until the Apple logo appears. As soon as the logo is visible, release the button and the device will restart. The sequence is therefore clear: press the top button, press the bottom button, hold the side button, and release when the Apple logo appears.

According to heise online, such a forced restart should rarely be necessary. If it is needed, however, the sequence is unambiguous. Anyone moving from a familiar iPhone to the foldable and automatically assigning the same function to the top and bottom buttons will therefore quickly get the sequence wrong.

What Really Changes When You Make the Switch

Three points of adaptation

Switching to the iPhone Duo brings three major adjustments. The closed passport-like shape changes how it feels in your hand. You have to find the Touch ID sensor again. And with the removal of the Action button, a direct hardware option familiar from other iPhones is gone.

The volume controls provide the clearest example because the familiar movement has changed. Apple offers a configurable solution in “Sounds & Haptics”. For silencing the device, the adjustment is instead made in Control Center, while a forced restart depends on the exact button sequence.

The detailed heise online section on the three operating tips shows the procedures again with accompanying images.