三星手机，隔几天会弹出一个广告，我用 logcat 看了看可能是来自于自带的“三星提醒”。

广告样式：屏幕上方长方形，简单白底，黑字，内容：天天开红包，最高 26888 元。点开是淘宝 APP 。

我系统设置淘宝是“限制”模式，平时不会在后台，我基本没怀疑过淘宝。今天记录了一下 logcat ，出广告的时间在 20 分钟前，只有 main 这部分 log 保留了，用 AI 分析了一下，初步结论是三星自带的提醒 APP ，我问了下这个 APP 具体干什么了，AI 的回答如下：

17:09:10 — The app is already running in background with two processes (main PID 3071, reminder service PID 27976). Samsung's FreecessController tries to freeze it but can't because it's using the accessibility service. 17:09:52-56 — I/O activity ramps up from 60 KB → 136 KB reads — it's starting to prepare content.

17:10:00.166 — Trigger: The system sends a scheduled job broadcast to sreminder: act=com.samsung.android.app.sreminder.cardproviders.common.servicejob dat=sreminder://...servicejob This is the system telling the app "time to check your scheduled reminders."

17:10:00.700-713 — The app registers a back button handler and creates a window surface ($_3071).

17:10:00.776-784 — Window finishes drawing and is shown on screen as a TYPE_APPLICATION_OVERLAY (type 2038). This is a floating overlay window that appears above all other apps — including Xiaohongshu. The window comes in with an appear animation.

17:10:00.815 — I/O spikes to 3276 KB read (loading reminder card data).

17:10:01.021 — Appear animation finishes, window surface is reparented back.

17:10:03.702-724 — Back callback removed, window is removed with an exit animation.

17:10:03.971 — Window fully gone. Total screen time: about 3 seconds of animation (brief visible overlay).

17:10:13.501 — Reminder service process killed by memory pressure.

17:10:21.489 — A new reminder service restarts for content provider access.

17:10:39.252 — Another CHECK_CONDITION broadcast fires — periodic background check.

我平时会用提醒这个 APP ，但我可以确定当时我没有设置任何提醒，该 APP 当时也没给我弹出任何正规的提醒，只有这个广告。