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Xiaomi

Guides for Xiaomi Black Shark 3S

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Other2

Set Up Switch Access

If tapping the touchscreen is difficult or impossible, everyday tasks like opening apps, scrolling, or typing on a Xiaomi phone can become a real barrier. Switch Access lets people with motor disabilities control the phone through one or more external switches instead of direct touch. These switches connect over USB or pair via Bluetooth and take over selection, scrolling, and text entry.

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Security & Privacy2

Set Up Screen Lock with Pattern, PIN or Password

If your Xiaomi phone still opens with a swipe, anyone who picks it up can read your messages, open apps or change settings. Without an active screen lock, accidental taps in your pocket can also trigger calls or purchases. Setting up a Pattern, PIN or Password closes that gap and keeps the phone usable only for you.

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Notifications & Focus

Hide or Show Notification Content for Locked Apps

Locking an app on your Xiaomi phone stops others from opening it, but the notification banner can still show the full message text on the lock screen. That means a locked banking app or messenger can leak private content even while the app itself stays protected. Xiaomi lets you control notification previews separately for every app you have locked, without switching notifications off entirely.

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Apps & Installation2

Turn Full Screen Mode On or Off for Specific Apps

When an app stretches its interface awkwardly across the full display or crops out buttons at the edges, full screen mode is usually forcing content into the wrong aspect ratio. Xiaomi lets you switch this behavior on or off separately for each installed app. The system also flags which apps handle full screen well and which ones do not, but that recommendation does not always match what you actually want.

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Network & Connectivity2

Change Preferred Network Type

If your phone shows no or barely any 4G/LTE signal in certain spots, calls drop and data stalls even though older 3G or 2G networks are still available nearby. The Preferred network type setting decides which mobile network your SIM tries first, and the wrong choice can leave you stuck searching for a signal instead of connecting to one that actually works.

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Notifications & Focus2

Show or Hide Lock Screen Notification Content

If your Xiaomi phone shows full message text on the lock screen, anyone picking up the phone can read private notifications before it is even unlocked. If content stays hidden instead, you only see that something arrived without knowing what it says or who sent it. This behavior is controlled by a single notification format setting in MIUI, separate from each app's own notification permissions.

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System & Settings2

Assign Google Assistant to the Power Button

On some Xiaomi phones a short press of the Power button opens the power menu instead of Google Assistant, even though full screen gesture navigation is active. This happens because the button shortcut for Google Assistant sits in a separate settings section and stays off by default. Without enabling it, you still need the home button gesture or voice command to wake the Assistant.

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Security & Privacy

Lock Background Apps

If a chat app or timer keeps getting killed the moment you switch away from it, MIUI's battery management is likely closing it in the background. On many Xiaomi phones the old trick of locking an app from the recent apps overview no longer works. The lock option now lives inside the Security app instead.

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Other2

Turn Quick Ball On or Off

If the floating navigation bubble is missing from your Xiaomi screen edge, you probably switched off Quick Ball at some point. This shortcut button gives fast access to actions like locking the screen, capturing a screenshot, or switching between recent apps without touching the physical buttons. When it disappears or starts blocking games and videos, it usually comes down to one setting hidden inside Additional settings.

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Photo, Video & Media2

Change Camera Photo Frame Ratio

Photos taken in the default 4:3 frame show black bars when you stream them to an HDTV or play them back on a widescreen display. Switching to a 16:9 ratio matches modern screens and avoids the letterboxing, while a 1:1 crop works better for square social posts. The frame setting sits in the camera menu and is easy to miss if you never open it.

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Calls & Messages2

Sort Contacts by First or Last Name

If your Xiaomi contact list feels out of order, it usually comes down to whether the Contacts app is sorting entries by first name or last name. This becomes a real problem when you are searching for someone by their surname but the list is alphabetized by given name instead. The rule that controls this sits in one setting inside the Contacts app.

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Other2

Manage the Personal Dictionary

If your keyboard keeps autocorrecting a name, brand term, or slang word you actually want to type, MIUI's personal dictionary is the setting that controls this behavior. Without an entry there, the keyboard falls back to its built-in wordlist and ignores your preferred spelling or shortcut for longer phrases.

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Other

Document Scanner Shortcut: Enable or Disable

If the camera keeps popping up a scan icon every time you point it at a sheet of paper or a presentation slide, the Document scanner suggestion is active. Some people find this shortcut useful for quickly digitizing paperwork, others just want the extra button gone from the viewfinder.

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Other2

Turn Off User Experience Program

If usage statistics keep syncing quietly in the background on your Xiaomi phone, the User Experience Program is likely still active. This service sends anonymous usage data from your device to Xiaomi to help refine products and features. Since it is not possible to verify exactly what data leaves your device, disabling this option is the safer choice.

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Notifications & Focus2

Turn Do Not Disturb On or Off

When Do Not Disturb is active on your Xiaomi phone, calls get an instant busy signal and every notification stays silent, even for messages you actually want to hear. Many people leave it on by accident after enabling it for a meeting or at night, since MIUI does not always show a clear reminder that it is still running. Checking the current status and switching it off takes just a few taps in Sound & vibration settings.

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Display & Home Screen2

Double Tap to Wake or Sleep Screen

Waking your Xiaomi phone only works by pressing the power button, and double-tapping the display does nothing. This happens when 'Double tap to wake or turn off screen' is switched off in the lock screen settings, so a quick glance at the clock or notifications requires a full button press instead.

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Other2

Change Device Name

If your Xiaomi phone still shows up under its model number when you scan for Bluetooth devices or connect to a hotspot, that is the default device name at work. It makes picking your phone out of a list of nearby devices harder, especially if you own more than one Xiaomi device. MIUI lets you replace that generic label with a name you actually recognize.

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Photo, Video & Media2

Unhide an Album in Gallery

If a photo album you hid earlier is missing from Gallery, it is not deleted - it just sits in a separate hidden section. Xiaomi keeps hidden albums out of the main view until you unhide them again, and each album needs to be restored on its own.

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Display & Home Screen2

Switch Between Navigation Buttons and Gestures

If your Xiaomi phone shows on-screen Back, Home, and App Toggle buttons but you expected full-screen swipe gestures - or swipes stopped registering and buttons appeared instead - the system navigation mode has switched. This setting decides whether MIUI runs on three buttons or edge-to-edge gestures, and mixing up the active mode leads to missed taps or swipes that do nothing.

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Notifications & Focus2

Change Alarm Tone

If your Xiaomi alarm keeps ringing with the same generic tone or the Nature alarm sound never changes, the ringtone categories in the Clock app are likely the reason. Some categories, like Nature alarm, only rotate through different sounds when the phone has an active internet connection. Without that connection, the alarm falls back to a stored default tone instead of downloading a new one.

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Display & Home Screen2

Remove Google Search Bar from Home Screen

After the first setup of a new Xiaomi phone, a Google Search bar sits on the home screen by default and takes up space you might want for widgets or app icons. Many people assume it is a fixed part of MIUI and leave it there without checking. It is actually just a removable widget, so getting rid of it does not require digging through any settings menu.

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Network & Connectivity

Connect to Wi-Fi Using a QR Code

Typing out a long Wi-Fi password on a Xiaomi phone gets tedious, especially with mixed case letters and symbols. If the network owner has a QR code ready, you can skip the password field entirely by scanning it with the built-in Wi-Fi scanner.

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Network & Connectivity2

Turn Location Access On or Off

If maps, weather, or camera apps suddenly stop finding your position on a Xiaomi phone, the general location toggle in MIUI settings might be switched off. Turning it off blocks GPS for every app at once, even those you already granted permission to use your location. This differs from per-app location permissions, which stay untouched but simply can't function without the master switch.

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Notifications & Focus2

Turn Battery Drain Notifications On or Off

If your Xiaomi phone keeps popping up alerts about fast battery drain, or you never get one and expect to, this setting is the reason. Battery drain notifications warn you when an app or background process burns through power faster than normal. Left enabled, unrelated background tasks can trigger these alerts more often than you would like.

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