When Did Bluetooth Come Out?

Short answer

• Bluetooth came out in stages, so the honest answer depends on which stage you mean. The work began at Ericsson in 1994. The Bluetooth Special Interest Group, the body that turned the idea into a shared standard, was formed in 1998. The first Bluetooth specification, version 1.0, was published in 1999. The first Bluetooth device was shown in 1999, but Bluetooth phones that ordinary buyers could easily purchase did not reach shops in numbers until 2001, and Bluetooth did not become truly common until the years that followed. If you need one year for a quiz or a quick answer, use 1999. That is the year the first specification was published and the year the first Bluetooth device was shown. If you need a precise answer, keep the three dates apart: invented in 1994, organized as an industry standard in 1998, and specified in 1999.

Why There Is No Single Date

Most technologies have a birth story that looks simple in hindsight and messy up close. Bluetooth is a good example. It was not a single invention that appeared in a shop one morning. It was a research project, then a company project, then an industry agreement, then a published specification, then a set of early products, and only later a feature that buyers expected in almost every phone, laptop, and pair of headphones.

Each step answers a different question. When was the idea first worked on? When did companies agree to share it? When was the technical rulebook published? When could a person buy something that used it? When did most people start using it every day? Confusing those steps is the main reason different sources seem to disagree. One source may call 1994 the start because that is when the design work began. Another may call 1998 the start because that is when the standards group was formed. A third may call 1999 the start because that is when version 1.0 appeared. All three can be right about their own step, and all three can mislead if they are quoted without the step they describe.

This guide keeps those steps separate. It follows the story from the cable problem that started it, through the naming, the standards group, the first specification, the first products, and the version history that brought Bluetooth to the present day.

The Problem Bluetooth Was Trying to Solve

In the late 1980s and early 1990s, connecting devices together usually meant cables. A phone might connect to a headset by a wire. A computer might connect to a printer, a modem, or another computer by a cable. Infrared links existed, but they needed a clear line of sight and careful aiming, and they did not work well when a device was in a pocket or a bag.

Ericsson, the Swedish telecommunications company, was thinking about mobile phones and their accessories. A phone in a pocket is useful only if it can still reach the things around it. A wired headset solved one problem and created another: the wire itself. The question Ericsson engineers asked was simple to state and hard to answer. Could a short range radio link replace those short cables, cheaply and with low power use, so that a phone could talk to a headset, a computer, or another device without being plugged in?

The early work was about radio design, power use, and finding a method that would work in a crowded radio environment without draining a small phone battery.

1989 to 1994: From a Study to a Design

Ericsson began studying a short link radio idea in 1989. Nils Rydbeck, then a senior technology leader at Ericsson Mobile, is widely credited with pushing the short link concept: a radio connection over a short distance that could link a phone to nearby devices. The work was exploratory at first. It asked whether such a link could be made small, cheap, and reliable enough to build into consumer products.

In 1994, the project gained a clearer shape. Jaap Haartsen, a Dutch engineer working at Ericsson, began formulating the system that would later be known as Bluetooth. Haartsen worked in Ericsson’s mobile phone division in Lund, Sweden, and his task was to find a practical way to make short range radio connections that added value to a mobile phone. The National Inventors Hall of Fame, which inducted Haartsen in 2015 for Bluetooth wireless technology, records that he began formulating the system in 1994.

One of the central ideas was frequency hopping. Instead of staying on one radio frequency, Bluetooth devices hop rapidly between frequencies in the 2.4 GHz band. That makes the link more resistant to interference from other devices using the same band, and it lets many nearby links share the air without constantly colliding. Haartsen’s work also addressed a practical problem that matters for battery powered devices: how two devices can find each other and connect without staying awake and listening all the time. His patent work concerned the way devices discover each other using frequency hopping piconets, small networks in which one device coordinates communication with nearby devices.

Saying Bluetooth was invented in 1994 does not mean a person could buy a Bluetooth headset in 1994. It means the design work began in earnest that year, inside Ericsson, years before a shared specification or a consumer product existed.

Why It Is Called Bluetooth

The name Bluetooth has nothing to do with the color of a tooth, and it was not chosen as a polished marketing brand. It was a temporary codename that stuck.

The name refers to Harald Bluetooth, a 10th century Danish king. Harald is remembered for uniting Denmark and Norway, or at least for bringing rival groups under one rule. The parallel was deliberate: just as Harald was said to have united peoples, the new technology was meant to unite devices from different makers under one way of communicating. The codename was proposed in 1997 by Jim Kardach of Intel, who was involved in the early industry effort. Kardach had been reading about Viking history, including the story of Harald, and suggested the name while the group still needed a working label.

At the time, Bluetooth was only meant to be a placeholder. When a permanent name was considered, alternatives included RadioWire and PAN, short for Personal Area Networking. Accounts of the decision agree on the broad outcome, even if they differ on details: PAN was already widely used as a term, and a full trademark search for RadioWire could not be completed in time for launch. Bluetooth, the placeholder, was the name available, and by the time a replacement could have been chosen, the name had already spread through the industry. The placeholder became permanent.

One detail about Harald himself is often repeated too confidently. The exact reason he was called Bluetooth is not settled history. A common explanation is that he had a tooth that looked blue or dark, perhaps a dead tooth. That explanation is plausible, but it is not proven in the same way as the naming story itself. The Bluetooth logo carries the same reference in visual form: it combines two runes, the letters H and B in the Younger Futhark runic alphabet, for Harald Bluetooth.

1998: Five Companies Agree to Share the Idea

A good radio design inside one company is not a standard. If every phone maker had built its own incompatible short range radio, buyers would have faced the same mess Bluetooth was meant to solve, only without wires. Ericsson therefore needed partners, and the partners needed a shared organization.

In 1998, the Bluetooth Special Interest Group, usually called the Bluetooth SIG, was formed. The five founding companies were Ericsson, IBM, Intel, Nokia, and Toshiba. Ericsson contributed the short link radio work. IBM contributed work on the logical layer, the part that organizes how devices communicate. Intel, Nokia, and Toshiba brought their own product and market reach. Together, the group could publish one specification that any member could build to, rather than five competing designs.

Sources differ slightly on the exact month the group was formed, with some histories pointing to an agreement in February 1998 and others dating the public launch to May 1998. That small difference is worth noting because it shows why a single day can be misleading. What is not in doubt is the year, the five founding companies, and the purpose: to create an open, shared specification and a qualification process so that products from different makers would work together.

The SIG grew quickly as makers of phones, computers, chips, and accessories saw the value of a common standard. The SIG still manages the specification today, runs the qualification program, and protects the Bluetooth trademarks.

1999: The First Specification and the First Device

In 1999, the Bluetooth SIG published the first Bluetooth specification, version 1.0. The Bluetooth SIG’s own specification version history records early drafts in 1998, version 1.0a, the first version published on the public web site, on 26 July 1999, and a revised version 1.0B in December 1999. That sequence is important. Version 1.0 was not a finished, flawless product on day one. It was the first published rulebook, followed quickly by corrections and clarifications as engineers tested real hardware against it.

The same year, the first Bluetooth device was revealed: a hands free mobile headset. It earned a Best of Show Technology Award at COMDEX, the large computer trade show of the era. That award is often cited as Bluetooth’s public debut, and it helps explain why 1999 is the most useful single answer to the question in the headline. The specification existed, and a real device using it had been shown in public.

Early Bluetooth was rough. Devices from different makers did not always work together smoothly, pairing could be fiddly, data rates were modest, and power use was higher than designers wanted. Later versions would need to fix what testing revealed.

2000 to 2001: The First Bluetooth Phones Reach Buyers

After a specification comes the slower work of turning it into products people can buy. Bluetooth chips, dongles, PC cards, mice, and phones began to appear in 2000, but the first Bluetooth phones did not reach ordinary buyers in numbers until 2001.

This is another place where sources can seem to contradict each other, so the details deserve care. The Ericsson T36 is often named as an early Bluetooth phone, but several histories describe it as a prototype that was not sold in its original form. The phones that are commonly cited as the first Bluetooth phones actually sold to buyers are the Ericsson T39 and the Ericsson R520m, both reaching the market in 2001. IBM also released a ThinkPad notebook with Bluetooth in 2001. The safe way to state the history is therefore in two parts: a Bluetooth headset was shown in 1999, and Bluetooth phones reached buyers in 2001. Collapsing those two facts into one sentence, such as saying the first Bluetooth phone came out in 1999, would be wrong.

Even in 2001, Bluetooth was not yet common. Early Bluetooth phones were expensive, early headsets were aimed mainly at business users, and many buyers had no other Bluetooth device to connect to. A phone with Bluetooth is useful only when headsets, cars, laptops, and printers also have it. That network effect took years to build, which is why the mass adoption date is later than every date discussed so far.

The Version History in Plain English

Bluetooth did not stand still after 1999. Each major version fixed problems, added speed, cut power use, or opened a new kind of use. The table below gives the main specification years. Treat the years as specification adoption years. A phone or headset with a given version usually appeared months later, after chips and products had time to reach the market.

Version	Year	What changed for users
1.0 and 1.1	1999 to 2001	The first shared specification. Basic short range links, with early interoperability problems.
1.2	2003	Adaptive frequency hopping, which reduced interference from Wi-Fi and other 2.4 GHz users.
2.0 plus EDR	2004	Enhanced Data Rate, with a theoretical maximum of 3 Mbps (about 2.1 Mbps in practice), improving file transfer and audio.
2.1 plus EDR	2007	Secure Simple Pairing, which made pairing easier and more secure than entering codes by hand.
3.0 plus HS	2009	High Speed, which could use a Wi-Fi link for large transfers while Bluetooth managed the connection.
4.0	2010	Bluetooth Low Energy, a low power mode that opened the way for small sensors, fitness trackers, and long lived coin cell devices.
4.1	2013	Better coexistence with LTE mobile signals and the ability for a device to act as both a central device and a peripheral device.
4.2	2014	Larger data packets, better privacy features, and faster Low Energy transfers.
5.0	2016	About twice the Low Energy speed, about four times the range in suitable conditions, and much larger broadcast capacity.
5.1	2019	Direction finding, which lets a device estimate the direction a signal comes from, useful for finding nearby items.
5.2	2020	LE Audio, a new audio system built on Low Energy, with a new LC3 codec designed for better sound at lower bitrates.
5.3	2021	Refinements to connection reliability, power use, and channel handling, mainly for connected devices and accessories.
5.4	2023	Improvements for large connected device networks, including periodic advertising with responses.
6.0	2024	Channel Sounding, which lets two devices measure the distance between them more precisely, useful for finding devices and for secure keys.
6.1	2025	Randomized RPA Updates, improving privacy and power efficiency for Low Energy devices.

A few notes keep this table honest. Speeds and ranges quoted for each version are theoretical maxima or best case figures. Real world speed depends on the devices, distance, obstacles, interference, and the profile in use. A Bluetooth 5.0 link does not automatically reach 240 meters indoors. That figure describes favorable outdoor conditions. Version numbers on a box describe what a device supports, not what it will always achieve. A Bluetooth 5.3 headset connected to a Bluetooth 4.2 phone will use the features both devices share. Later revisions after 6.1 are outside the scope of this table; readers who need the newest revision should check the SIG’s current specification list.

The history of Bluetooth Low Energy deserves a brief note because it is sometimes confused with the whole history of Bluetooth. Low Energy arrived with version 4.0 in 2010, more than a decade after Bluetooth itself. It did not replace classic Bluetooth. It added a low power way of communicating for devices that send small amounts of data and need to run for months or years on a small battery. Fitness trackers, sensors, and many smart home devices use Low Energy. Headphones and speakers that stream music for hours usually use classic Bluetooth audio or LE Audio, depending on the product. This article keeps Low Energy in its historical place: an important later chapter, not the origin of Bluetooth.

When Did Bluetooth Become Common?

If invention was 1994, the standard was 1998, and the specification was 1999, mass adoption was a slower story that stretched across the 2000s. Several changes had to line up before Bluetooth felt ordinary.

First, chips had to become cheap. Early chips were an extra cost, but as production grew, makers could include Bluetooth without raising prices much. Second, profiles had to mature. A profile is an agreed way of using Bluetooth for a specific job, such as hands free calling, stereo audio, file transfer, or printing. Without shared profiles, two Bluetooth devices might connect at the radio level and still fail to do anything useful together. Third, phones, laptops, and cars had to adopt Bluetooth together.

By the mid 2000s, Bluetooth headsets were familiar, especially among drivers and business users. Stereo headphones followed as Enhanced Data Rate and better audio profiles improved sound quality. Smartphones in the late 2000s and early 2010s pushed Bluetooth further into everyday life, as a phone carrying music, maps, and contacts became a hub for headphones, speakers, watches, and car systems.

Bluetooth Low Energy then opened a second wave of adoption in the 2010s. Small, battery efficient devices became practical: fitness bands, heart rate sensors, smart locks, and countless small sensors. By the time Bluetooth 5.0 arrived in 2016, Bluetooth was no longer a feature buyers checked for. It was an assumption, like Wi-Fi. Industry figures reported for 2021 put annual Bluetooth chip shipments at about 4.7 billion.

How Bluetooth Works, in Brief

Bluetooth is a short range wireless standard for exchanging data between fixed and mobile devices and for building personal area networks, the small networks around a person and their devices. It uses radio waves in the 2.4 GHz band, the same unlicensed band used by Wi-Fi and many other devices. That shared band is both a strength and a challenge. It means Bluetooth can work worldwide without a dedicated licensed frequency, but it also means Bluetooth must cope with interference from neighbors, microwaves, and other wireless gear. Frequency hopping and, from version 1.2 onward, adaptive frequency hopping are the main answers to that challenge. Adaptive hopping avoids channels that are busy or noisy and uses the clearer ones.

In a classic Bluetooth network, called a piconet, one device coordinates communication with up to seven active secondary devices. In Low Energy use, the roles are described differently, but the basic idea is the same: small groups of nearby devices that connect, exchange data, and then sleep to save power when they have nothing to say.

Bluetooth is often compared with Wi-Fi, but they do different jobs. Wi-Fi is designed for higher speed network access over a larger area, such as connecting a laptop to the internet through a router. Bluetooth is designed for short range links between personal devices, such as a phone to earbuds. Many devices carry both. Bluetooth 3.0 plus HS even used a Wi-Fi link for large transfers while Bluetooth managed the connection.

Infrared is the older comparison. Infrared needed line of sight and careful alignment. Bluetooth radio passes through pockets, bags, and light obstacles, which is why a phone can stay in a pocket while its earbuds play music.

Common Myths and Mix Ups

Several myths about Bluetooth history circulate online, and most come from collapsing the timeline described above.

The first myth is that Bluetooth was invented by Apple, Samsung, or another phone maker that later made it popular. It was not. The design work began at Ericsson, and the standard was created by a group of five companies that did not include Apple or Samsung as founders. Later popularity does not change origin.

The second myth is that Bluetooth came out in 2001 because that is when the first Bluetooth phones reached buyers. The year 2001 is correct for those phones, but it is not the year Bluetooth was invented, standardized, or specified. Using 2001 as the only date hides the 1994 design work, the 1998 standards group, and the 1999 specification.

The third myth is that Bluetooth and Bluetooth Low Energy are the same thing, or that Low Energy is simply the newest name for Bluetooth. Low Energy is a part of Bluetooth since version 4.0 in 2010, designed for low power, small data use. Classic Bluetooth predates it by more than a decade.

The fourth myth is that a higher version number always means a better experience. Version matters, but so do the profiles a product supports, the quality of its antenna and chip, and the device at the other end of the link. A new feature only helps if both devices support it.

The fifth myth is about the name. Harald Bluetooth was a real king, and the technology was named after him. The nickname’s origin, however, is not settled. Repeating the blue tooth explanation as certain fact goes beyond what the historical record proves. The naming story is well attested. The tooth story is not.

What This History Means When You Buy a Device Today

Check the Bluetooth version on both devices, not just one. A new phone will not give an old headset new features. Check the profiles and features that matter for your use: LE Audio and Auracast broadcast audio matter if you want shared listening or hearing aid support, while Low Energy matters if you want a sensor that runs for months. Treat range claims with skepticism: an open-air range does not predict performance through walls or with a phone in a back pocket.

Also check what the device actually needs Bluetooth for. Earbuds need stable audio and good pairing. A fitness tracker needs low power use. A smart lock needs a secure, reliable connection. For most buyers, Bluetooth 5.0 or later is a reasonable baseline in a new product. Bluetooth is designed to be backward compatible, so a new device still connects to an older one, using the features both share.

Frequently Asked Questions

When did Bluetooth come out?

Bluetooth was designed from 1994, organized as an industry standard in 1998, and first specified in 1999. If you need one year, use 1999, the year version 1.0 was published and the first Bluetooth device was shown. The first Bluetooth phones reached buyers in 2001.

Who invented Bluetooth?

Jaap Haartsen, working at Ericsson in Sweden, led the invention of Bluetooth wireless technology and began formulating the system in 1994. He was later inducted into the United States National Inventors Hall of Fame in 2015. The standard itself was created by the Bluetooth Special Interest Group, founded by Ericsson, IBM, Intel, Nokia, and Toshiba.

Why is it called Bluetooth?

It is named after Harald Bluetooth, a 10th century Danish king remembered for uniting Denmark and Norway. The name was proposed in 1997 as a temporary codename by Jim Kardach of Intel, and it stuck when a permanent replacement could not be settled in time. The exact reason Harald was called Bluetooth is not settled history.

What was the first Bluetooth device?

The first Bluetooth device shown in public was a hands free mobile headset, revealed in 1999 and awarded Best of Show Technology Award at COMDEX. The first Bluetooth phones sold to buyers came later, in 2001, including the Ericsson T39 and R520m.

What is the difference between Bluetooth and Bluetooth Low Energy?

Bluetooth is the whole short range wireless standard, first specified in 1999. Bluetooth Low Energy is a low power part of that standard, introduced with version 4.0 in 2010, for devices that send small amounts of data and need long battery life, such as sensors and fitness trackers.

Is Bluetooth the same as Wi-Fi?

No. Wi-Fi is designed for higher speed network access over a larger area, usually through a router to the internet. Bluetooth is designed for short range links between personal devices, such as a phone to earbuds or a watch to a phone. Most phones and laptops carry both because they do different jobs.

What is the latest Bluetooth version?

This guide covers the version history through Bluetooth 6.1, released in May 2025, which introduced Randomized RPA Updates for privacy and power efficiency. The Bluetooth SIG continues to publish specification updates, so readers who need the newest revision for a purchase or a technical project should check the SIG’s current specification list.

Keep reading: Bluetooth Low Energy Beacons

Sources & references

• Bluetooth Special Interest Group, Core Specification version history, including the 1999 version 1.0 publication sequence and later version adoption years.
• National Inventors Hall of Fame, Jaap Haartsen inductee record, including the 1994 start of the Bluetooth system formulation at Ericsson and the 2015 induction.
• Ericsson company history and contemporary industry reporting on the 1998 formation of the Bluetooth Special Interest Group by Ericsson, IBM, Intel, Nokia, and Toshiba, and on the 1999 first device award at COMDEX.
• Bluetooth Special Interest Group specification and version summaries for versions 1.0 through 6.0, including Enhanced Data Rate, High Speed, Bluetooth Low Energy, LE Audio, and Channel Sounding.
• Institute of Electrical and Electronics Engineers standardization record for Bluetooth as IEEE 802.15.1, noting that the IEEE no longer maintains the standard.