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Guides for Xiaomi Mi 9

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Set a Custom Watermark in the Camera App

If every photo automatically shows your device or camera model as a watermark, you might want your own text there instead. The Watermark settings inside the Camera app let you swap that default label for a personal signature, but the option sits a few taps deep in the menu. Once set, the custom text gets stamped on every new shot instead of the model name.

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Other

Turn Web Link Previews On or Off

If URLs in Xiaomi Messages show up as plain text instead of a preview card, the Automatic previews option is likely set to a mode you did not expect. MIUI lets you choose between previews for every shared link, previews limited to web addresses, or no previews at all. This affects both how conversations look and how much data the app pulls in the background.

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System & Settings2

Turn On/Off Gesture Confirmation

Swiping back or closing an app by accident during a full-screen game or a video can throw you straight out of the action. On Xiaomi phones with full-screen gesture control, this usually happens because gesture confirmation is turned off, so a single swipe is enough to trigger the action. Turning it on forces you to swipe twice before the gesture actually executes.

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Security & Privacy2

Turn Emergency Alerts On or Off

If your Xiaomi phone keeps buzzing with Amber Alerts or severe weather warnings you never signed up for, the Emergency alerts feature is likely still active in the background. Some people want the opposite and need extreme threat notifications, vibration and voice alerts to actually get through. Either way, the switch sits in a security menu that is easy to overlook.

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Calls & Messages2

Add a Birthday to a Contact

If the default Contacts form on your Xiaomi phone only shows phone number and email, there's no visible field for a birthday. That date option sits in a separate section that most people never open, so they assume it doesn't exist and skip it. Without it, you lose an easy way to keep birthdays tied directly to a contact card instead of a separate calendar entry.

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Apps & Installation2

Set an App Timer to Limit App Usage

Some apps quietly eat hours of your day without you noticing, especially social media or games that keep notifications pulling you back in. On Xiaomi phones there is no built-in reminder that tells you when an app has crossed a healthy usage limit. Digital Wellbeing lets you assign a daily time budget per app so it pauses itself once that budget runs out.

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Other2

Remove a Member from a Contact Group

If a contact still shows up in a group even though you no longer want them there, the fix is not to delete the contact but to unlink them from that specific group. On Xiaomi phones this distinction confuses people because the removal option sits inside the group menu, not in the contact's own profile screen.

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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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Other

Set Up Text-to-Speech Output

When TalkBack or Select to Speak reads content in the wrong language or sounds too fast, the text-to-speech engine on your Xiaomi phone is set to the wrong voice or rate. Pitch, speed and language all come from one shared accessibility setting, so a single wrong value affects every screen-reading feature at once. Fixing it stops garbled or mismatched speech without disabling accessibility features entirely.

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Apps & Installation2

Split Screen on Xiaomi Phones

Split screen lets you run two apps side by side on your Xiaomi phone, so you can chat while browsing or take notes while watching a video. MIUI offers more than one way to trigger it, and not every app supports it the same way. Knowing how it behaves helps you decide when it actually saves time.

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Display & Home Screen2

Custom Image on Always-on Display

If the pre-installed Always-on Display themes on your Xiaomi phone all look the same, you can swap them for a photo of your own. MIUI lets you pick any image from your gallery instead of the default clock designs. Once applied, you can still adjust the clock position, text color, and how battery or notification icons appear on top of your picture.

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Storage & Backup2

Clear RAM and Storage

If your Xiaomi phone feels sluggish or storage keeps filling up, junk files, app cache, and rarely used apps are often the cause. MIUI includes a built-in cleanup tool that clears RAM and storage in one pass, but what actually gets removed depends on which categories you select before confirming.

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System & Settings2

Turn On/Off Pop-up on Keypress

If every letter you tap on your Xiaomi keyboard flashes up in a small preview bubble, typing can feel slower and the screen looks cluttered. This preview comes from a keyboard setting called Popup on keypress, and it can get in the way when you type quickly in Messenger, WhatsApp or any other app. You can switch it on or off directly in the keyboard settings on your phone.

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System & Settings2

Restart the Xiaomi Smartphone

If apps on your Xiaomi phone start lagging, background downloads get stuck, or the interface feels sluggish after days of uptime, a restart usually clears the problem. MIUI keeps processes and cached data running in the background, and over time this can slow down the whole system. A clean reboot forces MIUI to close every open app and rebuild its memory from scratch.

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Other2

Assign Custom Button Shortcuts

If double-pressing the power button always opens the camera when you wanted a screenshot instead, the button shortcut linked to that gesture doesn't match how you actually use your phone. MIUI lets you remap gestures like double-press power or long-press volume to actions such as torch, split screen or Google Assistant. Finding and changing that mapping means digging through a settings menu that isn't obvious at first glance.

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Security & Privacy

Add a Second Face Unlock Profile

If Face Unlock keeps failing because you wear glasses, a mask, or switch up your look, one stored face often is not enough. Xiaomi lets you register a second face profile so the sensor recognizes both appearances without asking for your PIN every time. Without this second entry, the phone falls back to Pattern, PIN or Password whenever your look does not match the saved data.

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Other2

Change Color Scheme

If photos, videos or app icons on your Xiaomi phone look washed out or overly intense, the display color scheme is likely set to the wrong profile. MIUI lets you switch between a natural, a vivid and a standard color rendering, plus fine-tune the color temperature manually. Picking the wrong option can make skin tones look off or colors appear flat.

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Battery & Power2

Turn Off Battery Saver Automatically After Charging

If Battery saver stays active even after your Xiaomi phone finishes charging, it keeps throttling performance and dimming the screen longer than needed. MIUI can switch Battery saver off on its own once the battery reaches a set charge level, so you don't have to remember to disable it by hand every time you unplug the charger.

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Language & Input2

Turn a Keyboard On or Off

A new keyboard downloaded from the Play Store does not automatically show up next to Gboard on your Xiaomi phone. Until you switch it on in the input settings, it stays hidden from the language switcher and typing keeps defaulting to the old keyboard. This usually happens with third-party layouts, handwriting keyboards, or apps installed after the initial setup.

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Display & Home Screen2

Change Wallpaper on Home Screen

Tapping and holding the home screen only gives you a handful of preset wallpapers to pick from. If you want a specific photo from a particular folder set as your background, that shortcut alone won't get you there.

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Network & Connectivity2

Send Photos and Videos via Bluetooth

Sending a photo or video from your Xiaomi phone to a paired device sometimes stalls right after you tap Share, or the target device never shows up in the list. This usually comes down to picking the wrong sharing option or Bluetooth pairing not being active. The steps below use MIUI's file sharing menu, which works the same for pictures, videos and most other file types.

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Notifications & Focus2

Snooze App Notifications

When a chat app or delivery tracker keeps buzzing during a meeting, muting it completely isn't always what you want. MIUI lets you pause a single notification for a set time instead of turning it off for good. This keeps the alert coming back later without touching the app's notification settings.

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Apps & Installation2

Configure Individual System App Settings

When Security, Messages, or Camera on your Xiaomi phone keeps auto-updating or asking for permissions you never approved, a hidden per-app toggle in System app settings is usually the cause. Each preinstalled MIUI app, from Calendar to Recorder, carries its own switches for updates, notifications, and background data that do not show up on the regular app info screen. Finding the right toggle for the right app is the only way to fix the behavior without disabling the whole app.

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Photo, Video & Media2

Record a Video with the Camera App

If the Xiaomi Camera app only shows photo mode when you open it, video recording is often just one swipe away and easy to miss. Some users also get confused about which button starts, pauses, and stops a recording, since the shutter button changes function depending on the mode. This mix-up leads to accidentally recorded clips or missed footage.

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