Why Your Smartphone and Your Laptop Don't Have LiFi Yet: The Hardware and Standards Bottleneck

LiFi (Light Fidelity) has long been discussed as the next major leap in wireless communication, offering gigabit speeds, zero radio frequency (RF) interference, and localised security. Yet, despite these proven technical advantages, LiFi is still noticeably absent from modern smartphones and laptops.

Consumers often ask why companies like Apple, Samsung, or Dell haven't integrated LiFi receivers into their flagship devices. The answer is not about whether the technology works, but rather a combination of manufacturing economics, physical hardware constraints, and the complex ecosystem of wireless standards.

Here is a breakdown of why consumer electronics are still waiting for LiFi, and what it will take to finally bring the technology to mainstream devices.

1. Moving Past the "Smart Bulb" Concept to Infrared and beyond

To understand the hardware wait, it is necessary to clear up a common misconception about how modern LiFi operates. Early media coverage often portrayed LiFi as a technology that used standard visible LED ceiling lights to beam the internet to devices.

While visible light communication was the foundation of early LiFi research, the industry has largely pivoted to Infrared (IR) and more recently to Vertical-Cavity Surface-Emitting Lasers (VCSELs).

Relying on visible light presented severe consumer limitations, most notably, the lights had to be turned on to transmit data, and standard LEDs have inherent bandwidth limits. Moving to Infrared solved these issues. IR is invisible, allows for significantly higher data rates, avoids visible flickering, and functions perfectly in a dark room.

Because modern LiFi relies on these invisible IR lights, integrating LiFi into a device does not mean giving it the ability to "see" a ceiling lamp. It means installing a highly specialised, dedicated optical transceiver. That requirement introduces immediate hurdles for device manufacturers.

2. The IEEE 802.11bb Standard and the Ecosystem Dilemma

Wireless technologies rely on universal standards to function globally. Wi-Fi operates on the 802.11 family of standards, ensuring that any Wi-Fi chip built by any manufacturer will connect seamlessly to any router in the world.

For years, LiFi lacked this unified standard, resulting in fragmented, proprietary systems. Manufacturers will not integrate a communication chip into millions of consumer devices if they cannot guarantee interoperability.

A major milestone was reached recently with the ratification of the IEEE 802.11bb standard. This established an official, global framework for light-based wireless communications, designed specifically to integrate seamlessly with existing Wi-Fi architectures. Under 802.11bb, a device's operating system can manage a LiFi connection exactly as it does Wi-Fi.

However, the ratification of the standard only highlighted the industry's "chicken-and-egg" problem:

• Infrastructure providers (companies making routers and enterprise access points) are hesitant to mass-produce 802.11bb LiFi transmitters because no consumer devices currently have the hardware to receive the signal.

• Device manufacturers (like Apple or Samsung) refuse to integrate LiFi receivers because there is no widespread infrastructure for their customers to connect to.

Until one side of the industry takes the financial risk to build out their end of the hardware, the ecosystem remains stalled.

Also, If you connect an iPhone to a Netgear Wi-Fi router, it just works. The Wi-Fi Alliance guarantees cross-brand compatibility.

For years, LiFi lacked this guarantee. Many LiFi systems were completely proprietary. A receiver built by Company A might not be able to "talk" to a ceiling transmitter built by Company B. Device manufacturers are terrified of this interoperability risk. They refuse to install a new component in millions of laptops or phones if users are going to experience constant compatibility failures simply because they walked into a building using a different brand of LiFi transmitter.

3. The Smartphone Bottleneck: Cost, Space, and Design

Smartphones are the ultimate target for any wireless technology, but they present the harshest environment for new hardware integration. Adding an 802.11bb IR receiver to a phone involves three major roadblocks:

Bill of Materials (BOM) Costs Every component in a smartphone is strictly budgeted. Adding a new optical IR transceiver module increases the manufacturing cost per unit. For a company shipping hundreds of millions of phones annually, a component that adds even a few dollars to the BOM equates to a massive increase in overall expenses. Manufacturers are unwilling to absorb this cost, or pass it on to buyers, for a feature that cannot be widely used yet due to the lack of infrastructure.

Internal Space Constraints Physical space inside a modern smartphone is highly limited. Components like the battery, processor, and camera array compete for every millimeter. Integrating a dedicated optical transceiver requires physical space that manufacturers would rather use for larger batteries or better camera sensors, which are established consumer priorities.

Line-of-Sight and Casing Materials Unlike Wi-Fi radio waves, which easily pass through plastic, glass, and metal, LiFi requires a direct optical pathway. To integrate an IR transceiver, phone designers must include an external "window" that is transparent to infrared light.

Furthermore, the placement of this window is critical. It must be positioned so that the user's hands do not block the signal during normal use. Incorporating these optical windows without compromising the phone's structural integrity, aesthetic design, or IP68 water and dust resistance ratings is a significant engineering challenge.

4. Why Laptops Will Lead the Transition

Because of the severe constraints of smartphones, the first native integrations of LiFi hardware are expected to happen in laptops. The laptop form factor solves many of the immediate physical and practical problems associated with optical data transmission.

Natural Hardware Placement Laptops have significantly more internal volume, making it easier to absorb the size of an IR transceiver module. More importantly, laptops possess an ideal, unobstructed line-of-sight location: the top bezel of the screen. Because most modern laptops already incorporate complex webcam and IR sensor arrays (such as those used for Windows Hello), integrating a LiFi module in the same area is a logical progression. When the laptop is open, the transceiver naturally points outward toward the room, unobstructed by the user's hands.

Solving High-Density Network Congestion Laptops are frequently used in environments where traditional Wi-Fi struggles the most, such as corporate offices, tech conferences, and university campuses. In these dense areas, hundreds of devices compete for limited RF bandwidth, causing slowdowns. Because LiFi uses the light spectrum, which is vastly larger than the RF spectrum and immune to radio interference, a LiFi-equipped laptop can maintain dedicated gigabit speeds in a room where Wi-Fi is heavily congested.

Enterprise Security Demand The initial push for LiFi integration will likely be funded by the enterprise sector. Laptops built for government, military, and financial institutions prioritise security above all else. Because LiFi signals are confined to the area illuminated by the IR transmitter and cannot penetrate physical walls, the network is fundamentally immune to remote interception. This hardware-level security is a feature enterprise clients are willing to pay a premium for, which will subsidize the technology's eventual transition into standard consumer laptops.

5. The Implementation Timeline

The transition to LiFi-enabled devices will be incremental.

Currently, semiconductor companies are working to miniaturise the hardware. The goal is to produce combination chips that house both Wi-Fi 7 and LiFi processing on a single piece of silicon. This will dramatically reduce both the physical footprint and the BOM cost for manufacturers.

Before native integration becomes standard, consumers will likely see LiFi enter the market via plug-and-play USB-C dongles, targeting remote workers and enterprise users who require secure, interference-free connections. Following the accessory phase, laptops will begin featuring built-in transceivers in their bezels.

Smartphones will be the final step. Widespread mobile integration will likely occur only after the laptop and enterprise markets have forced the rollout of ceiling-mounted 802.11bb infrastructure in offices and public spaces, giving smartphone manufacturers the justification they need to finally alter their hardware designs.

Well, let us see on the trajectory will unfold for this in the next 5 to 10 years.