The difference between HDR10+, Dolby Vision and HLG on your phone

A phone can advertise HDR and still look unremarkable in a bright room or outdoors. The three names attached to that claim describe different ways of delivering high dynamic range, rather than three interchangeable versions of the same thing. Comparing them starts with the signal, then moves to the screen, software and content you actually use.

HDR10+ is an extension to HDR10 with scene-by-scene instructions. Dolby Vision is a proprietary system that also uses dynamic metadata, but with a different licensing and hardware chain. HLG takes a different route, using a broadcast-friendly transfer curve designed to work with ordinary SDR receivers.

On a handset, the format badge is only part of the story. A panel’s sustained brightness, the phone’s decoding hardware and the app’s streaming decisions can matter as much as the label on a specification sheet. That makes the choice a practical question as well as a technical one.

What high dynamic range actually changes

Standard dynamic range video maps the brightest highlights and darkest shadows into a fixed range that ordinary screens can display. HDR gives the signal more room for both, so a sunset, a neon sign or a highlight on skin can have greater intensity and finer gradations rather than clipping into white or black.

Those benefits only appear when the phone’s panel, software and brightness controls work together. A capable display can render brighter highlights while keeping the rest of the picture balanced, provided the content includes the necessary range. An HDR label cannot create missing detail or rescue a poorly mastered stream.

Phones also create different viewing conditions from televisions. A television viewed across a lounge can preserve a bright highlight that appears tiny on a handheld screen, while glare and reflections from a window may hide subtle improvements on either device. The right format still matters, but the visible payoff depends heavily on where you are sitting.

How HDR10+ improves the HDR10 baseline

HDR10 is the common baseline for consumer HDR. Content typically carries one set of mastering metadata for the title, describing its maximum brightness and darkest reference level. Compatible displays use that information to map the signal to their own capabilities, and HDR10 content can use 10-bit colour to produce smoother gradients.

HDR10+ was developed by Samsung and Amazon to add more precise, scene-by-scene metadata. It can tell a compatible screen how to handle highlights differently from one scene to the next, reducing the chance that bright detail will disappear in a dim sequence or look excessively dim beside brighter material. It remains backward compatible with ordinary HDR10 playback.

That does not make every HDR10+ phone brighter than an HDR10 model. The metadata is an instruction, not additional screen power, and it depends on the manufacturer implementing it properly. Recent Android flagships commonly support HDR10+, whereas iPhone models generally focus on Dolby Vision and HLG. HDR10+ is also a royalty-free standard, which helps explain its broad adoption across TVs, streaming services and Android hardware.

Why Dolby Vision behaves differently

Dolby Vision is a licensed format from Dolby Laboratories. It uses dynamic metadata, often on a frame-by-frame basis, to guide a compatible display’s rendering of brightness, contrast and colour. Certified televisions, streaming apps and mobile devices work with that system, which gives Dolby more control over the final presentation than the simpler HDR10 model.

For phone viewers, Dolby Vision has particularly strong support in Apple’s ecosystem and is also available on selected Android phones from manufacturers including Samsung and Xiaomi. Support for general HDR is far more widespread than support for Dolby Vision, so a service may offer Dolby Vision to one handset and HDR10 to another. The app and the subscription tier can determine which version you receive.

Dolby Vision normally has a backwards-compatible HDR10 presentation for screens that cannot decode it. That fallback retains the high dynamic range intent without carrying the same Dolby-specific instructions, so it should not be treated as identical quality. A Dolby Vision badge also says little about full-screen brightness: a small, brilliant highlight can reach a high peak figure while the rest of the picture remains comparatively dim.

How HLG fits broadcast television

HLG, or Hybrid Log Gamma, was developed by the BBC and NHK for broadcast television. Instead of attaching detailed metadata to each programme, it uses a different transfer curve to encode the picture. A receiving device can apply the appropriate conversion for an HDR panel or convert the signal for a conventional SDR screen.

This approach was designed around broadcast workflows, including receivers that cannot handle HDR. An HLG signal can therefore reach a wider range of televisions, although conversion to SDR does not produce the same result as native HDR playback. On a phone, the chipset, operating system and display pipeline must all understand how to map that curve properly.

Platform support remains an important part of the experience, as TV operating system battles demonstrate. The operating system can shape which apps, picture modes and formats become available. In Australia, most free-to-air television remains standard dynamic range, while some 4K services use HEVC, which is a compression technology rather than an HDR format. HLG consequently matters on a phone mainly when a broadcaster or streaming service explicitly supplies it.

Why peak brightness specifications need context

Peak brightness figures often describe a small highlight measured under laboratory conditions. A handset quoting 1,600 or 2,000 nits may reserve that level for a brief moment, a small area or a specific operating mode. Full-screen brightness can be lower, particularly when the phone becomes warm or automatic brightness limits the panel outdoors.

The panel matters too. OLED displays can produce very dark blacks because their pixels switch off, while LCD panels generally retain some illumination and need more backlight to look punchy. Neither technology guarantees good HDR on its own. Ten-bit rendering, a wide colour gamut, accurate tone mapping and a useful high-brightness mode all influence the result, as does the distance between your eyes and the screen.

Software support is negotiated at several layers, from chipset decoding to operating-system services and individual app releases. Even support for something like Threads on Android depends on the app and operating-system combination, much as HDR playback depends on the service, decoder and panel working together. The advertised codec is useful information, but it is not a guarantee that a particular title will appear in HDR.

What Australian viewing habits reveal

Outdoor use makes brightness claims especially relevant. A typical bright arvo in Sydney or Brisbane can be far harsher than the controlled lighting used for display testing, while Melbourne’s changing conditions can move from a shaded platform to direct sun quickly. At the MCG or SCG, a live AFL stream may compete with reflections and a bright sky. A good HDR mode can improve highlight visibility, but no format can remove glare or guarantee readable detail in direct sunlight.

Inside, the service you use usually sets the available format. Netflix’s Australian service separates Standard and Premium tiers, priced in Australian dollars, with Premium generally providing the 4K and HDR entitlement. Compatible phones may receive Dolby Vision, with HDR10 as a common fallback. YouTube’s HDR catalogue is largely HDR10. ABC iview and 7plus offer valuable high-definition viewing, but their availability of HLG or Dolby Vision differs from international services.

The local mobile market adds another layer. A 5G label on an Optus or Telstra SIM does not automatically guarantee HDR, stable 4K streaming or unlimited video resolution; the plan’s data allowance and the service’s delivery settings still apply. For commuters and frequent travellers, downloading a film before leaving home can be more dependable than relying on a crowded network, especially when a handset is also managing screen brightness and sustained video decoding.

Choosing a format for everyday use

Begin with the content, device and viewing environment, then check the details that specifications often omit.

• Your screen and chipset: Confirm support for the specific HDR format, rather than relying on a general “HDR” label in the display settings.
• The app and service: Check the individual title, because format availability can change with the programme, subscription tier and Australian catalogue rights.
• Display controls: Look for a dedicated HDR or high-brightness mode and understand how it interacts with automatic brightness.

Each format also has a different practical strength.

• HDR10+: Broad Android compatibility and scene-level brightness guidance without Dolby’s licensing requirements.
• Dolby Vision: Detailed dynamic metadata and mature support within Apple’s video ecosystem.
• HLG: Broadcast compatibility, most relevant when a service actually delivers a genuine HLG stream.

For most Australian phone users, HDR10+ is the broad Android default, Dolby Vision is the leading format on iPhone and HLG remains service-specific rather than a reason by itself to buy a handset. The names matter, but sustained brightness, competent tone mapping and access to the programmes you actually watch determine whether the difference appears on screen.