Bedtime Mode: Turn On or Off
If your Xiaomi phone keeps buzzing with notifications late at night or the screen stays distractingly bright while you try to fall asleep, Bedtime mode is probably not set up yet. This feature is supposed to mute the device and dim the colors automatically, but only if you pick the right trigger - a fixed schedule or charging at night. Choosing the wrong option is the usual reason it never kicks in when you actually need it.
Turn On or Off Dual 4G
If your second SIM card keeps dropping to 3G or 2G while the first stays on 4G, your phone is likely limiting the fast connection to a single slot. Xiaomi lets you decide whether both SIM cards can use 4G at the same time, but this option only shows up on models that support it in hardware.
Move Photos or Videos into an Album
Photos and videos pile up in one long Gallery feed until finding a specific shot means endless scrolling. When you try to sort them into an album, Gallery stops you with a choice between moving or copying the file, and picking the wrong option can leave duplicates behind or remove the original from where you expected it.
Turn Screenshot Sound On or Off
Every time you capture a screenshot on a Xiaomi phone, a short chime plays to confirm the capture went through. If that sound feels too loud in meetings or you simply want an audible confirmation back, the setting sits separately from your general ringtone volume and needs its own toggle.
Enable Reader View in Mi Browser
Long Wikipedia entries or news articles often mix text with ads, sidebars and menus that crowd a phone screen. Mi Browser has a reader view that strips a page down to just the article text and images. If the option seems to be missing on a particular page, it usually depends on how that page is built.
Change Default Dialer App
If you install a new phone or call app on your Xiaomi device, calls may still open in the standard MIUI Dialer instead of your preferred app. This happens because MIUI keeps its own dialer set as default until you switch it manually in the app settings. Third-party dialer apps from the Play Store only take over once you assign them as default there.
Add Extra Contact Details
Only a phone number and name saved for a contact leaves out useful extras like birthday, nickname, or a website link. On Xiaomi phones, MIUI hides these optional fields behind the standard edit screen, so you never see them unless you go looking. Without filling them in, calls and messages only ever show the bare minimum information for that person.
Set a Custom Notification Sound
If you pick a full song as your Xiaomi notification tone, only the first few seconds usually play before the sound gets cut off or overlaps with the next alert. MIUI lets you use almost any audio file stored on your phone as a notification sound, no matter which folder it sits in, but long tracks feel out of place for a quick alert. Trimming the file first keeps notifications short and easy to recognize.
Allow Calls During Do Not Disturb
If Do Not Disturb mode is silencing calls you actually want to receive, a call filter is deciding who gets through and who gets blocked. Xiaomi phones let you choose between allowing calls from anyone, only contacts, only starred contacts, or nobody at all while the mode is active. Missed calls from family or work contacts usually trace back to this exact setting being set too strictly.
Turn Call Barring On or Off
If your Xiaomi phone keeps racking up charges while roaming abroad, or you need to stop all incoming or outgoing calls for a while, call barring is the setting responsible. Unlike silencing a contact or using Do Not Disturb, call barring blocks calls at the network level and requires a password to change. Getting the wrong option enabled can also cut off calls you actually want, like international or roaming numbers.
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.
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.
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.
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.
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.
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.
Set Battery Saver for Individual Apps
If one app drains your battery fast while another stops sending notifications on time, a single phone-wide power saving mode will not fix both problems. Xiaomi lets you assign a separate battery plan to each app instead of forcing every app into the same restriction level. Picking the wrong option for an app can either waste battery or delay important alerts.
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.
Turn VoLTE On or Off
If your Xiaomi phone keeps dropping calls to a shaky 2G or 3G signal even though you have full LTE bars, VoLTE is probably switched off. Without it, voice calls ignore your 4G connection and fall back to older, slower networks, which means longer connect times, choppier audio and extra battery use. Turning Use VoLTE on or off is a single switch inside your SIM settings.
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.
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.
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.
Turn Game Turbo On or Off
When you mirror your Xiaomi's screen to a monitor or TV, gaming performance can drop noticeably if Game Turbo stays inactive. This mode reroutes system resources, speeds up data transmission and blocks distracting features like notifications during matches. If it stays on by default, though, it can also interrupt calls or messages you actually want to see.
Change Keyboard Theme (Language & Input)
If the Gboard keyboard on your Xiaomi phone still shows the default gray background, the theme setting has never been switched. This only changes the visual layout - colors, gradients or picture backgrounds - and has no effect on autocorrect or typing speed. The key borders can also be turned on or off separately from the overall theme.