Samsung Internet

At a glance

• Browser class: chromium (the user agent has a Chrome/<number> token).
• Excluded components: none.
• Read on Android: audio_latency.
• Samsung-related check: vendor_flavors includes samsungAr when that global exists.
• Lab sample: none.

What works

• Chromium-only components: device_memory, heap_limit, ua_client_hints and ua_versions read the same APIs as in Chrome; on a phone ua_client_hints usually carries mobile=1 and the model and form factors the browser reports.
• audio_latency: read because the user agent says Android; the AudioContext is closed at once and nothing is played.
• vendor_flavors: lists which of ten browser-specific globals exist. One of them is samsungAr. Whether a given Samsung Internet version defines it is up to the browser, so treat its presence as a hint, not a rule. The component is in the browser group of the visitorId.
• touch_support and screen_resolution (larger side first, so rotation does not change it).
• Graphics, offline audio, fonts, font preferences, Math, codecs, locale and display preferences.

What is unavailable or blocked

• keyboard_layout uses an API meant for physical keyboards; expect unavailable on Android. It is outside the ids.
• plugins: mobile builds often list none, and then report the plain value none.
• apple_pay and private_click: the plain value none.
• webgpu: depends on the browser version, Android version and GPU.
• ua_client_hints and ua_versions report he=blocked when a Permissions Policy refuses the detailed hints.

What WhiskerJS excludes and why

Nothing. The chromium row of the exclusion table is empty. If the browser, a setting or an extension adds noise to canvas or WebGL readback, the double render marks canvas or webgl_image as noisy (render_mismatch) for that run. The known-answer probes also catch noise that is the same on both reads (noisy / seeded_noise, for canvas, webgl_image and audio).

Samsung Internet and Chrome on the same phone

Both are class chromium. Expect the browser group of the structuredId to differ (brands in ua_client_hints, globals in vendor_flavors, possibly codecs), while gpu, device and fonts often match because they follow the phone itself. See Comparing two results.

Integrity flags to expect

• headless_markers does not apply its “desktop Chrome without window.chrome” test to user agents with Mobile or Android; a 0x0 outer window still raises it.
• automation_webdriver under WebDriver control, for example in device test farms.
• software_renderer in emulators that render WebGL in software.
• The lie checks if a script overrides browser functions.

Early lab observations

There is no lab data for Samsung Internet yet. The early, small sample at signalsVersion 1 covered Mac Chrome, Mac Safari, iPhone Chrome and iPhone Safari only.

Testing it yourself

Open the live demo in Samsung Internet and in Chrome on the same phone and compare the structuredId groups. The lab mode copies one line per run. Nothing is sent anywhere.

Support table for Samsung Internet

Expected status of every component in this browser at signalsVersion 9, from the support matrix (updated 2026-10-26). Basis "code" means expected from the library code and documentation, not yet measured; "lab" means seen in the early lab sample.

Component	Status	Basis	Note
apple_pay	none	code	No ApplePaySession: reports the plain value none.
audio	ok	code	noisy / seeded_noise if the audio known-answer probe sees noise.
audio_latency	ok	code	Read when the user agent says Android.
browser_class	ok	code	Class chromium.
canvas	ok	code	noisy / render_mismatch or seeded_noise if an extension or setting adds noise to readback.
canvas_readback	ok	code
color_depth	ok	code
color_gamut	ok	code
content_blockers	ok	code	none, or the bait names a content blocker hid.
cpu_architecture	ok	code
device_memory	ok	code	From Chromium 146 the value carries the tag ;c146 (new buckets).
dynamic_range	ok	code
font_preferences	ok	code
fonts	ok	code
fonts_canvas	ok	code
forced_colors	ok	code
hardware_concurrency	ok	code	Read 16 times; noisy / read_varies if the reads disagree. Some browsers cap or round the value.
heap_limit	ok	code
intl_locale	ok	code
keyboard_layout	varies	code	Chromium API meant for physical keyboards; on Android expect unavailable.
languages	ok	code
math	ok	code
media_codecs	ok	code
noise_profile	ok	code	canvas=exact,webgl=exact,audio=exact on a stock browser; webgl=na without WebGL.
pdf_viewer	ok	code
permissions	ok	code
pixel_ratio	ok	code
platform	ok	code
plugins	varies	code	Mobile builds often list no plugins and then report the plain value none.
prefers_contrast	ok	code
private_click	none	code	No attributionSourceId on anchors: reports the plain value none.
reduced_motion	ok	code
screen_frame	ok	code
screen_resolution	ok	code
speech_voices	ok	code	Digest of the voice list, or none; some browsers fill the list late.
storage	ok	code
time_zone	ok	code
touch_support	ok	code
ua_client_hints	ok	code	he=blocked when a Permissions Policy refuses the detailed hints.
ua_versions	ok	code
vendor	ok	code
vendor_flavors	ok	code
webgl_image	ok	code	noisy / render_mismatch or seeded_noise if an extension or setting adds noise to readback.
webgl_params	ok	code	Where WebGL 1 is available; unavailable / no_context without it.
webgl_renderer	ok	code
webgl_vendor	ok	code
webgpu	varies	code	Depends on browser version, operating system and GPU; needs a secure context. unavailable / no_api without navigator.gpu, no_context without an adapter.

Questions and answers

Related pages