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Xiaomi

Guides for Xiaomi Redmi K40 Gaming

511 guides

System & Settings2

Change the Time Zone Manually

If your Xiaomi phone keeps switching its time zone whenever you travel or connect to a different carrier network, automatic time zone detection is the cause. This network-based setting overrides any manual change you make until you turn it off. Once you know where that toggle sits, you can lock in a fixed time zone yourself.

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Security & Privacy2

Change Carrier Name in Status Bar

The carrier label at the top of your screen and on the lock screen isn't always what you'd like it to say, especially if your provider's branding is long or outdated. On dual SIM phones the same generic label often shows for both slots by default, which gets confusing when the two cards belong to different networks.

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Network & Connectivity2

Turn On/Off Wi-Fi Calling

Weak signal at home, underground, or in a concrete building often causes dropped calls on a Xiaomi phone, even when Wi-Fi shows full bars. Wi-Fi calling routes voice calls through your wireless network instead of the mobile network, but only works if your carrier actually supports it. If the toggle is missing from your SIM settings, an unsupported plan or outdated carrier profile is usually the reason.

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Display & Home Screen2

Remove a Home Screen Widget

A widget that once seemed useful can quickly become clutter on your Xiaomi home screen. Outdated info panels, oversized widgets, or ones that constantly refresh data in the background all eat into space and battery life. If a widget no longer earns its spot, getting rid of it is worth doing before it wastes more resources.

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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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Battery & Power

Battery Optimization Settings for Individual Apps

If a messaging app stops delivering notifications until you open it, or a background app quietly drains your battery overnight, MIUI's per-app battery optimization is usually behind it. Some apps get frozen too aggressively, others are left completely unrestricted and keep running in the background. Getting this balance wrong either kills battery life or breaks apps that need to stay active.

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Calls & Messages2

Clear the Whole Call History

When missed, dialed, and received calls pile up on your Xiaomi phone, scrolling through the list to find one number gets tedious fast. Deleting entries one at a time barely makes a dent if you actually want a clean call log. MIUI offers a single action that wipes the entire history at once, and once it's gone, it's gone for good.

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Other2

Switch Between Browser Tabs

Comparing prices or articles across several websites gets confusing fast if you cannot jump between open pages in Mi Browser. On Xiaomi phones the tab overview is easy to miss, so people end up closing and reopening pages instead of switching between them directly.

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Network & Connectivity2

Turn Data Roaming On or Off

If your Xiaomi phone connects to a foreign network, no data moves until data roaming is switched on. Once active, you get internet access abroad, but your carrier may bill extra for it. Xiaomi does not offer a simple on/off toggle here - it gives you three distinct roaming states, and picking the wrong one either blocks data or leaves roaming running when you do not want it.

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Display & Home Screen2

Change the Always-on Display Clock Style

If the Always-on display on your Xiaomi phone only shows a plain digital number and you want something more analog or more detailed, the clock style is buried a few taps deep in the display settings. Many users never notice the option because it sits inside a submenu, not on the main Always-on display toggle screen. Picking the wrong style can also affect how much info fits on the lock screen and how visible the clock stays in daylight.

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Other

Turn On/Off Ad Blocker in Mi Browser

If ads keep interrupting your browsing or pages suddenly feel slower to load, the built-in ad blocker in Mi Browser is likely the reason. Xiaomi ships this filter active by default, similar to the pop-up blocker, and it can be switched on or off depending on how you want pages to render. Turning it off removes the filtering step but may bring back more banners and auto-play video ads.

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Network & Connectivity2

Turn Off Wi-Fi Hotspot Automatically

Leaving the personal hotspot active after every connected device disconnects quietly drains battery on Xiaomi phones. MIUI includes a setting that shuts the hotspot down on its own once nothing is using it, but most owners never notice it exists.

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Security & Privacy2

Turn Off App Lock

If Xiaomi's App lock keeps asking for a PIN, pattern or fingerprint before certain apps open, and some apps seem to have vanished from your app drawer, the lock feature is still active in the background. Turning it off releases every protected app at once and brings previously hidden apps back into view.

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Security & Privacy

Set the Fingerprint Recognition Method (Touch or Press)

If your Xiaomi phone has the fingerprint sensor built into the power button, unlocking with the screen off depends on how the sensor reacts to your finger. Some users notice the phone unlocks too slowly, or not at all, because the sensor expects a light touch instead of a firm press, or the other way around. Switching the recognition method changes how the sensor behaves every time you pick up the phone.

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Language & Input2

Show or Hide the Emoji Switch Key

If you type a lot of emojis, switching between the language globe and the emoji picker can slow you down on the MIUI keyboard. The globe icon and the emoji key share the same spot, so only one of them shows on the keyboard row at a time. Turning on the emoji switch key swaps that icon while quick language switching still works by holding the space bar.

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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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Notifications & Focus2

Keyboard Vibration Settings

If every tap on the on-screen keyboard triggers a buzz that feels too strong or too weak, or typing feedback vanished after an update, the keyboard's Haptic feedback on keypress setting is usually the cause. This option runs independently from your general system vibration, so toggling System vibration alone will not fix it. Notifications and Focus mode profiles do not touch this setting either, since it lives inside the keyboard app itself.

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Other2

Stopwatch: Lap Times, Pause and Reset

Lap times captured in the Xiaomi Clock app sometimes vanish once you pause the stopwatch, or tapping Stop clears the whole list instead of just pausing it. This happens because Start, Lap timer, Pause and Stop / Reset are separate controls with distinct effects on the running time and the lap history. Mixing up Pause and Stop is the most common reason lap data gets lost unexpectedly.

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Network & Connectivity2

Show SIM Card Messages

Old text messages from years back sometimes stay on the SIM card instead of moving into the phone's internal storage. If you swap the SIM into a new Xiaomi phone, those messages do not show up in your normal inbox automatically, so it looks like they are gone.

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Security & Privacy2

Lock Home Screen Layout

If icons keep shifting position every time you delete an app or accidentally shake your phone, MIUI is still rearranging empty spaces on its own. Locking the layout stops that automatic reshuffling and keeps every icon exactly where you placed it.

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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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Notifications & Focus

Quiet Ringer When Lifted

If your phone still rings at full volume even after you pick it up during an incoming call, the Quiet ringer when lifted feature might be switched off. This motion-based setting is meant to automatically lower the ringtone as soon as you lift the device, but it only works when enabled in the calling settings. Without it active, you have to manually silence every call yourself.

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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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Other2

Turn On/Off Read Text on Images (Select to Speak)

When Select to Speak on your Xiaomi phone starts reading text from photos or the camera viewfinder out loud, the Read text on images option is active. Xiaomi flags this as an experimental function, so it can misread words, skip lines entirely, or lag behind what the camera actually shows. Knowing where to switch it off helps once the readouts cause more confusion than they solve.

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