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Xiaomi

Guides for Xiaomi Redmi 12

511 guides

Calls & Messages

Show or Hide Week Numbers in Calendar

Scheduling an event and trying to figure out which calendar week it falls into turns into quick mental math every time. The Calendar app on Xiaomi phones can display the week number next to every row, but the option sits buried in a settings menu most people never open.

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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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Apps & Installation2

Restrict Mobile Data Usage for an App

If a Xiaomi phone burns through your data plan even though you barely open certain apps, background data access is usually the cause. By default every installed app can use mobile data and Wi-Fi without restriction. On dual-SIM phones this applies separately to each SIM slot, which makes it harder to spot which line is actually consuming the data.

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Notifications & Focus

Allow or Deny Do Not Disturb Access for Apps

When an app suddenly enables Do Not Disturb on its own, or a call app keeps muting notifications you actually want to see, a hidden system permission is usually behind it. On Xiaomi phones, individual apps can request permission to switch Do Not Disturb on or off, and that access is not always obvious from the app itself. Checking which apps hold this permission helps you regain control over your notifications.

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Other2

Set Touch & Hold Delay

If long-pressing an app icon on your Xiaomi home screen either opens the shortcut menu too fast by accident or takes too long to react, the touch and hold delay is set to the wrong stage. This timing controls how long you need to keep your finger down before a long-press action triggers, and it affects every control element that supports it, not just app shortcuts.

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Battery & Power

Battery Saver: Extra Power Optimization Options

If Battery saver is switched on but your Xiaomi phone still lights up the screen for every notification, the standard saver mode is not doing its full job. Always-on display can also keep draining power even while Battery saver is active. Two extra toggles sit outside the main Battery saver screen and control exactly this behavior.

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System & Settings2

Add New Browser Tabs

Closing your current page every time you want to check something else in Mi Browser gets old fast. If you cannot find a way to browse two pages at once without losing your place, the tab feature in Mi Browser solves that without extra apps.

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System & Settings2

Switch to Scientific Calculator Mode

You open the Calculator app on your Xiaomi phone expecting only basic math, but functions like sine, cosine, tangent, square roots or Pi are nowhere to be found. Many users assume the app simply lacks these tools, when in fact they are hidden behind a display mode that most people never trigger. Without knowing the trick, you end up switching to a third-party app for calculations your phone already supports.

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Other2

Turn Personalized Ad Recommendations On or Off

If ads on your Xiaomi phone feel oddly tied to your recent searches or app activity, Personalized ad recommendations is the setting behind it. Switching it off does not lower how many banners you see, it only stops MIUI from matching them to your interests and usage data.

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Security & Privacy2

Change App Lock Password Type

If you set up App lock on your Xiaomi phone with a pattern and now want something faster or more secure, you are not stuck with that choice. The lock type you picked during setup can be swapped for a PIN or password at any time, without disabling App lock first.

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Security & Privacy

Manage Device Administrator Apps

An app you want to uninstall on your Xiaomi phone refuses to go away, or a widget keeps nagging you about admin permissions. Device administrator apps get elevated rights to change security settings or wipe data remotely, which is exactly what blocks a normal uninstall. Turning off that permission is usually the fix before the app can finally be removed.

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Security & Privacy2

Turn On/Off Emergency SOS

If your Xiaomi phone fires off an emergency text every time you grab it too fast, Emergency SOS is likely reacting to five quick presses of the power button. The feature sends your location and, if you choose, a summary of your last hour of call activity to selected contacts. Turning it off - or setting it up properly first - stops accidental alerts and unwanted location shares.

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Calls & Messages2

Send MMS Message

Xiaomi Messages does not offer a separate MMS button, so it is easy to assume attachments go out as a normal text message. As soon as you add a photo, video, or .gif to a chat, the app switches the message to multimedia format automatically. If your carrier has MMS disabled or your mobile data is off, that message can silently fail to send.

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Calls & Messages2

Export Contacts as a VCF File

Switching to a new phone or just backing up your address book can be tricky when the Contacts app on your Xiaomi phone does not offer a simple 'transfer' button. Instead, contacts leave the device as a VCF file, and picking the wrong storage location or account often means the file cannot be found afterward. Knowing where the export lands makes the difference between a working backup and a lost contact list.

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Photo, Video & Media

Download Videos via Mi Browser

Saving a video from Facebook, YouTube or Vimeo on a Xiaomi phone usually means installing a separate downloader app first. Mi Browser can skip that step, but only if you know where the download option for links is hidden in the profile menu. Without it, a pasted video link just opens for streaming instead of saving to your storage.

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Notifications & Focus2

Turn Camera Shutter Sound On or Off

Every photo on your Xiaomi phone triggers a shutter click, even in a quiet room or during a video call screenshot. The sound comes from the camera app itself and has nothing to do with your ringtone or notification volume, so muting the phone alone will not silence it.

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Apps & Installation2

Change Default Apps

If your Xiaomi phone keeps asking which app to use every time you open a song, a link, or a photo, no default app is set for that file type. MIUI stores these preferences per action, and once none is chosen, the selection prompt reappears every time you tap the file.

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Photo, Video & Media

Turn Best Photo Marks On or Off

If your Gallery keeps flagging one photo out of a burst as the best shot, MIUI is comparing similar images and tagging the sharpest or best-exposed one automatically. Some users find this helpful for sorting large photo batches, others just want a clean gallery without extra labels. The setting controls whether this comparison runs at all.

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Calls & Messages2

Reject an Incoming Call

If a call comes in at a bad moment on your Xiaomi phone, you don't have to answer it or wait it out. The red decline icon on the incoming call screen lets you dismiss it right away, but only if you swipe correctly. Miss the gesture and the call keeps ringing or gets answered by accident.

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Calls & Messages

Dark or Light Theme for the Phone App

If the Phone app keeps showing a bright white call screen while the rest of your Xiaomi runs in Dark mode, the dialer has its own theme setting separate from the system. This mismatch usually happens because the app theme was never linked to System default, or it got reset after an update. It affects the call screen, contact list and dial pad, not just the notification bar.

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Calls & Messages2

Share a Contact via Message or App

Retyping a phone number into a text message often introduces errors, especially with long international formats. On Xiaomi phones, the Contacts app lets you send a person's saved details directly through messaging or email without typing anything manually. This keeps every field intact and avoids typos on both sides.

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Photo, Video & Media2

Delete Photos or Videos from Gallery

Storage on your Xiaomi phone fills up fast once photos and videos pile up in the Gallery app. Many users don't realize they can select several items at once instead of deleting them one by one. This guide covers the exact steps to clear out unwanted media quickly.

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Other2

Quick Ball Shortcuts and Behavior Settings

If the floating Quick ball only opens one fixed app or keeps popping up during video playback, its behavior settings are still on default. MIUI lets you change the trigger gesture, auto-hide rules and screen position, but these options sit outside the shortcut list and get overlooked easily.

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