1. Get a protective case before using your iPhone Duo

Before taking your iPhone Duo out of the box and putting it to work, make sure you have a compatible protective case ready.

The iPhone Duo is unlike any previous iPhone, and that difference extends to how it handles everyday wear and accidental impacts.

Although Apple uses premium materials and has introduced durability improvements, the foldable design brings vulnerabilities that conventional iPhones do not have.

Its titanium frame and Ceramic Shield 2-protected outer display offer considerable resistance to ordinary bumps and scratches. The flexible inner screen, however, is more susceptible to damage.

Even if the iPhone Duo feels comfortable and elegant without a case, protecting it from the outset is a sensible precaution.

Several cases designed specifically for the iPhone Duo are available, allowing users to choose according to their preferences.

Slim cases help preserve the device's relatively compact profile but may not fully protect the titanium frame from scratches or impacts. Some designs also require adhesive strips to keep the case securely attached.

2. Consider AppleCare+ to avoid expensive repairs

If there is one additional purchase worth considering when buying an iPhone Duo, it is Apple's extended protection plan, AppleCare+.

Repairing a premium foldable smartphone can be extremely expensive, particularly when damage falls outside the standard warranty.

According to the pricing cited in the report, replacing the inner folding display could cost as much as $999 without additional coverage.

With AppleCare+, the service fee for eligible accidental damage to the inner display falls to $99.

Repairs to the outer screen are also reduced to $29 under the protection plan.

Notably, the matte protective coating on the inner folding display can be replaced for $19 with AppleCare+, an important consideration for anyone planning to keep the device for several years.

AppleCare+ with Theft and Loss protection for the iPhone Duo costs $19.99 per month or $199.99 annually. Service fees and deductibles may still apply to claims.

Customers can enroll within 60 days of purchasing the device.

Those who already own several Apple products may also want to consider AppleCare One.

The individual plan costs $19.99 per month and covers up to three eligible devices, with each additional device costing $5.99 per month.

A family plan costs $49.99 per month and supports eligible devices belonging to up to six members of a Family Sharing group.

3. Handle the inner folding display with extra care

The iPhone Duo's large folding display is its defining attraction, but it is also the component that demands the greatest care.

Unlike the outer display, which is protected by Ceramic Shield 2, the inner screen uses a specially engineered polymer coating.

Its nano-textured surface helps reduce reflections and makes the display crease less noticeable.

An additional scratch-resistant layer provides some surface protection, but it cannot make the flexible display as durable as conventional glass.

Users should therefore check for sand, grit and other hard particles before folding the device.

Avoid pressing firmly on the inner screen or allowing objects to become trapped between the two halves, particularly anything with sharp edges.

Even tiny grains of sand can scratch the polymer surface, making it advisable to exercise additional caution when using the phone at beaches or in dusty environments.

Another important precaution is never to peel off the factory-installed protective coating.

If the coating becomes damaged, contact Apple about having it replaced.

The replacement cost cited in the report is $19 with AppleCare+ or $49 without coverage.

Before applying a third-party screen protector or using cleaning solutions, users should also consult Apple's official care instructions to avoid damaging the specialized coating.

4. Explore the hinge's flexible viewing angles

The iPhone Duo's hinge does more than simply allow the phone to open fully or close.

Users can position the device at different angles, allowing it to stand on its own and enabling several convenient hands-free uses.

For example, the phone can be placed on a table like a miniature laptop, with its lower half resting on the surface and the upper half tilted to a comfortable viewing angle.

This arrangement is useful for FaceTime calls, watching videos or participating in online meetings.

Another option is to position the device in a tent-like configuration, with the outer display facing the user.

This setup works particularly well on a desk or bedside table.

Once users become familiar with the hinge, they may discover that the foldable design offers more than portability.

It also provides a range of flexible viewing positions that reduce the need to hold the phone continuously.

5. Run two apps side by side on the larger display

One of the iPhone Duo's most significant upgrades is the ability to display two applications simultaneously.

Unlike previous iPhones, which did not offer comparable side-by-side multitasking, the Duo brings the experience closer to what users might expect from an iPad.

To get started, fully unfold the iPhone Duo and rotate it into landscape orientation.

Open the first app, then swipe upward to move it into position on either the left or right side of the display.

The remaining portion of the screen will show the Home Screen, allowing users to select a second application to run alongside the first.

For those who frequently use the same two apps together, the device also supports saving them as an app group.

With both applications open in Split View, tap the area between them.

The paired apps will then appear together in the app switcher, making it easier to reopen the combination without setting everything up again.

Rotating the phone into portrait orientation returns the interface to a single-app view.

Turning it back to landscape restores the paired applications.

Split View also supports opening two windows from the same application, allowing users to compare content side by side.

This can be particularly useful when reading documents while taking notes, comparing information or responding to messages while viewing other content.

6. Try the camera features designed for a foldable phone

The iPhone Duo's folding design introduces several photography options that are less convenient on conventional smartphones.

One of the most useful is the ability to take selfies using the rear cameras.

Users can unfold the phone and use the outer display as a viewfinder to frame their shots.

This makes it possible to take advantage of the rear camera system rather than relying exclusively on the front-facing camera.

Another feature worth exploring is Duo Preview.

When enabled in the Camera app, the outer display shows a live preview of the photograph being taken.

This allows the person standing in front of the camera to adjust their pose and position without repeatedly asking the photographer to check the framing.

Families with young children or pets may find Kid Cue particularly useful.

The feature displays animated visuals on the outer screen to attract a child's or pet's attention toward the camera.

Although it may not work perfectly every time, it offers a playful way to make photographing children and animals easier.

Smart Take, meanwhile, is designed to simplify group photography using the rear camera.

Users can place the phone on a stable surface, activate the feature and gather everyone in front of the device.

Once the group is in position, the iPhone Duo automatically captures the photograph, allowing the person who would normally be behind the camera to appear in the picture as well.

7. Turn your iPhone Duo into a desktop information display

On conventional iPhones, StandBy mode generally works when the device is charging and positioned horizontally.

With the iPhone Duo, the feature can operate even when the phone is not connected to a charger.

Users simply need to fold the device partially and stand it on a desk.

The hinge keeps the phone upright, allowing one of its displays to function as a clock, digital photo frame or information dashboard without requiring a separate stand.

Placed beside a computer, the device can show upcoming appointments and weather information without users having to pick it up repeatedly.

Those who prefer a minimalist setup can choose a large clock display that is easy to read at a glance.

In addition to Clock and Modular layouts, the iPhone Duo introduces dedicated Calendar and Weather views.

The Photos interface also supports Shared Albums.

Users can customize colors, fonts and the information displayed to suit their preferences and daily routines.

With the iPhone Duo, Apple is doing more than bringing a folding screen to its smartphone lineup. The device also introduces new ways of interacting with an iPhone.

However, making the most of these capabilities requires a combination of careful hardware protection and a willingness to explore the features designed specifically for its foldable form factor.

Hai Phong