com.samsung.android.bluelightfilter Copy

Labelled "Eye comfort shield" on the device and signed by Samsung OEM keys that also sign the Android framework, this is the Galaxy display comfort feature. Samsung describes it as something a user turns on to limit the screen's blue light, and says it is similar to the older blue light filter except that an algorithm adjusts the screen colour according to the time of day. It offers an adaptive mode that follows the time of day and a custom mode with a chosen schedule and colour temperature. Its recorded permissions are narrow and consistent with that: controlling display colour transforms, coarse and background location for sunset and sunrise scheduling, writing settings, and the Quick Settings tile. Version note: Samsung states that "Eye comfort shield is available on One UI 3.1 and higher devices", and adds on the same page that features may not be available on all phone models. On earlier releases the equivalent feature was the plain blue light filter, which is where this package's name comes from, so the label and behaviour a user sees do differ by One UI version and may be absent on a given model. Builds observed here run from 4.2.0 to 5.6.0, targeting API 29 up to 36. For Android Enterprise, EMM and kiosk deployments this has no enrolment, security or management role, and nothing in Samsung's documentation ties it to device management. That makes it a plausible candidate for removal on a kiosk or signage device where warm-shifted colours would be unwanted. Be aware, though, that we could not source what else on a Galaxy build depends on this package, and we have not verified on hardware what disabling it actually does to the Quick Settings tile, the Settings entry or any other display setting that may share it. Test on a single device before applying it to a fleet. On staff-carried handsets it is generally better left alone, since users value it and it costs nothing to keep.

• Reduce eye strain on your Galaxy phone or tablet - Samsung US →
• Package provenance for com.samsung.android.bluelightfilter - Android System App Database →

• Signed by the device maker's own signing key (Samsung), so it is an OEM preinstall, but 2 different certificates appear across the fleet, so OEMs ship their own builds of it. It also signs the Android framework, so it is a platform-level key on its device(s). Inferred from the certificate appearing only on Samsung devices (508 packages, 10196 observations).
• Its largest observed manifest declares 15 permissions: 2 runtime (user-granted), 7 signature or system-level, 2 install-time and 4 vendor or uncatalogued.
• Never reported as user-facing, so it runs as a background or system component rather than an app the user opens.