How Foldable OLED Screens Actually Work Inside Smartphones?

What is a Foldable OLED Display?

A foldable OLED screen uses a technology of flexible screens that can be bent or folded without damaging them. OLED is Organic light Emitting Diode. OLED does not require a backlight, unlike LCD display. The display is bendable because it uses Ultra Thin Glass (UTG), in place of glass. This is found in smartphones like the Samsung Galaxy Z Fold5 and Motorola Razr 40 Ultra.

How Foldable OLED Technology Works?

Foldable OLED displays are made of several thin layers:

• Flexible substrate

• OLED organic material

• Touch-sensitive layers

• Protective encapsulation

Layers can be bent along the hinge line. This is supported by a robust hinge mechanism. Display drivers and software also help adjust apps in real time when the screen is folded.

Advantages of Foldable OLED Displays

• Multitasking : Run two applications side-by-side, like on a tablet.

• Larger screen: Can be carried in a pocket, but expands to a large size.

• The premium look is eye-catching, futuristic and attractive.

• Lightweight and thin is easier to carry.

Limitations and Challenges of Foldable OLED

• More expensive: The cost of folding smartphones is higher than that of normal smartphones.

• Risk of durability: Too much folding can cause wrinkles.

• dust resistance: Must have sealed hinge protection

• Repair costs Replacing folding displays can be expensive.

Real-Life Use Cases of Foldable OLED in Smartphones

• Business use: Large screen helps in reading documents.

• Consumption of media: View videos on a large screen

• Game Immersive gaming experience.

• Use the split screen for browsing and messaging.

Brands Using Foldable OLED Technology in Smartphones

Samsung - Pioneering the world of foldable OLED

Samsung is the first major brand to use OLED Foldable technology. It introduced in 2019 the Galaxy Fold - a dual screen device with foldable interior panel. The device used Dynamic AMOLED and Ultra-Thin Glass. Samsung released its foldables in Bangladesh shortly after their global launch. Galaxy Z Fold5 & Z Flip5 is now officially and informally available. The hinge system, as well as the One UI Fold program offer flexibility at its best. Samsung has invested heavily in R&D for foldables, and each generation improves crease resistance as well as camera placement. Samsung's OLED foldable smartphones (BDT 220,000+) are not cheap, but they offer unbeatable durability and support for software.

Huawei - Pushing Foldable OLED Boundaries with Mate X Series

Huawei launched the MateX, a foldable OLED smartphone in 2019, with the Foldable OLED market. Unlike Samsung, Huawei went for an outward-folding display. It folds to the side of the device, leaving one screen exposed. The MateXs 2, and X3 feature OLED display and hinge mechanisms of the highest quality. Huawei's phones are not compatible with Google due to the sanctions. However, their hardware is very powerful. These phones are imported unofficially and can cost up to BDT 2,000,000+ in Bangladesh. They are ideal for productivity enthusiasts because of their slim design and flexible hinge.

Motorola - Foldable OLED in a Nostalgic Razr Package

In 2019, Motorola brought the classic Razr flip-phone back with an foldable OLED display. The Motorola Razr 2018 had a vertically folding clamshell. The Razr 40 Ultra features an AMOLED external cover and a flexible, foldable internal OLED. The Razr 40 Ultra is small and can easily fit in your pocket. Unofficially, Razr smartphones are sold in Bangladesh for BDT 1,40,000 - BDT 1,80,000. Motorola's Foldable OLED is a stylish and portable device that appeals to fashion-conscious consumers.

Oppo - Compact Innovation with Find N Series

In 2021, Oppo launched its first foldable smartphone with Oppo N. The foldable panel was designed with a minimal crease and a compact form factor. Following the find N2 flip, followed by find N3. Both featured Samsung E5 displays. Oppo has innovated with the Flexible Hinge which minimizes the space when the phone is folded. The phones have not yet been officially released in Bangladesh, but they are currently available on grey markets in Bangladesh for BDT 1,50.000. Oppo is focused on making folding phones more affordable without compromising the design.

Vivo - Premium Foldable OLED Smartphones with X Fold Series

Vivo released its first folding phone, the Vivo Fold in 2022, using Samsung E5 foldable OLED. The device has a large 120Hz display, and it is equipped with a sturdy hinge system. 's latest X Fold2 follows the same trend, with its polished design and high-end specs. Vivo foldables are geared towards photography, battery life and foldability. These are intended for premium users, and they can be as expensive as BDT 1,90,000. Vivo phones are appealing because of their design.

Xiaomi - Foldable OLED for Power Users

In 2021, Xiaomi launched the MIX Fold. It featured a tablet-like screen, a camera with liquid lens as well as a desktop-style interface. The Mix Fold 2 was improved by a slimmer design and faster OLED refresh rate. The foldables in Bangladesh are not common but they can be purchased unofficially for around BDT 180,000. Xiaomi foldables target tech lovers who are looking for cutting-edge features.

How Foldable OLED is Changing the Smartphone Industry in 2025

The design of smartphones has been transformed by the introduction of foldable OLED displays. Phones and tablets are merging. Tech lovers in Bangladesh want flexible screens to multitask, play games, or watch media. Now, brands are optimizing their UI for foldable layouts. Demand for accessories like screen protectors and foldable cases is also on the rise. By 2025 more affordable foldables could be available, making the technology more popular.

Future of Foldable OLED Technology

Next-generation innovation will include:

• OLED rollable screens

• Tri-fold and stretchable phones

• Under-display camera integration

• More power-efficient folding displays

In a few short years, we could see OLED foldable smartphones for less than BDT 1,000,000. Local brands will probably adopt it too.

FAQs

Q1. What is the benefit of Foldable OLED?

A: It gives users a larger display in a portable form--perfect for multitasking and media.

Q2. Are Foldable OLED phones available in Bangladesh?

A: Yes, Samsung's foldables are official, while others like Huawei and Motorola are available unofficially.

Q3. Are Foldable OLED phones durable?

A: New models with UTG and hinge protection are durable but require careful use.

Q4. Can I use local apps on Foldable OLED phones?

A: Yes, apps like bKash, Nagad, Facebook, and YouTube run smoothly.

Q5. Is Foldable OLED better than regular OLED?

A: Foldable OLED is more flexible and modern, but standard OLED is still more durable and affordable.