Turn Off Screen Lock
Want to skip entering a pattern, PIN, or password every time you wake your Xiaomi phone? Removing the screen lock only asks for your current unlock method once, but afterward the device stays open to anyone who picks it up. That trade-off matters if the phone holds banking apps, messages, or saved logins.
Scan QR Codes Automatically with the Camera App
If your Xiaomi camera does not react to a QR code on a package or shipping label, the Scan QR codes function is likely switched off. Without it, the camera behaves like a normal photo app and shows no scan prompt at all, forcing you to search for a separate scanner app.
Set the Monthly Data Usage Reset Date
If the data usage counter on your Xiaomi phone resets on a different day than your carrier billing cycle starts, the numbers you see never match your actual plan. This happens because the reset date in Data usage is set independently from your SIM contract and has to be adjusted manually. Without matching it, data warnings and remaining allowance calculations stay inaccurate all month.
Block Calls from Unknown Numbers
When a caller shows up as Unknown or Private, your Xiaomi phone has no caller ID to check against a blocklist entry. Instead of rejecting these calls by hand every single time, you can have the Phone app reject them automatically before they ring through.
Hide or Show the Notch
If icons or app content get cut off by the camera cutout on your Xiaomi phone, the Notch display setting is likely still set to show full-screen content behind it. Some apps stretch their layout right into the cutout area, hiding status bar icons or clipping off parts of the interface. MIUI lets you switch between covering the Notch with a black bar or letting content run around it.
Set Up Automatic Cache Clearing
Cache files pile up quietly in the background and can eat into your storage or slow down apps over time. Xiaomi phones running MIUI include a setting that clears this cache on its own once the screen locks, but it is off or set to a schedule you may not want. Adjusting the timing decides how often your device cleans up automatically without you doing it by hand.
Turn On or Off USB-OTG
If your Xiaomi phone does not recognize a USB drive, game controller, or keyboard through a USB-C adapter, the OTG function is often switched off or has timed out. MIUI disables OTG automatically after 10 minutes without an active connection, so a device that worked yesterday can suddenly show nothing today.
Switch Contact Name Order (First/Last Name)
If your Xiaomi contact list always shows the first name before the last name, finding people gets harder when you organize contacts by family name or your workplace expects last-name-first lists. This affects how names appear in Contacts, the call log, and message threads alike. MIUI lets you flip that order without editing a single contact.
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.
Set Up a VPN Connection
If a website, streaming service, or company network blocks your current connection, a VPN reroutes your traffic through an encrypted server and hides your real location. Without one, your provider and any public Wi-Fi you join can log everything you send. MIUI does not create VPN profiles on its own, so you need a working server address and login details ready before you connect.
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.
Mount SD Card
If you tapped Eject SD card or safely removed the card from your Xiaomi phone, the storage disappears from your file manager and apps stop saving to it. MIUI keeps the card unmounted until you tell it to reconnect, even after a reboot in some cases. Photos, downloads, and app data meant for the card get redirected to internal storage instead.
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.
Turn Off Mobile Data When Device Is Locked
If your Xiaomi phone keeps burning through mobile data even while sitting locked in your pocket, a background data setting is likely still active. MIUI can cut mobile data automatically once the screen locks, but the delay before that happens is often left on a setting that does not match how you use the phone. That gap is what causes messages, emails or app updates to keep syncing long after you stopped looking at the screen.
Turn On, Off or Auto Camera Flash
If your Xiaomi camera fires the flash in bright rooms or refuses to light up a dark shot, the flash mode is set wrong. The camera app lets you force the flash on, force it off, or leave the decision to the automatic sensor. Getting this wrong ruins both photos and video clips shot in low light.
Turn Call Waiting On or Off
If you are already on a call and a second call comes in on your Xiaomi phone, a tone and a pop-up usually appear. When Call waiting is switched off, that second caller hears a busy signal instead and nothing shows up on your screen. With Dual SIM, this setting applies per SIM card, so one line can behave differently from the other.
Turn On High Contrast Text
Thin system fonts in MIUI can blur together against busy wallpapers or in bright sunlight, which makes reading notifications and menus tiring. The High contrast text option adds a bold black outline around letters to separate them from the background. On several Xiaomi phones this switch sits in an experimental accessibility section, so it can behave slightly differently between apps.
Turn Floating Notifications On or Off
Every pop-up banner that slides over your Xiaomi lock screen or current app comes from the floating notifications feature, and not every app should get that permission. If a messaging app keeps interrupting your screen with banners while a quieter app never shows up at all, the per-app floating notification setting is usually the reason.
Turn Autofill Service On or Off
If login fields on your Xiaomi phone stay empty or a browser keeps offering saved passwords you never asked for, the Autofill service is likely misconfigured. This system feature decides whether apps and browsers can pull addresses, payment details or passwords into forms automatically. Switching providers or turning the service off changes what gets filled in and which app holds that data.
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.
Turn Auto-correction On or Off
If your Xiaomi keyboard keeps swapping in a word you never typed, MIUI auto-correction is stepping in before you finish a sentence. It usually helps, but on names, slang or foreign words it can turn a normal message into something embarrassing. The feature sits in the keyboard settings and you can switch it on or off depending on how you type.
Schedule Power On/Off
If you keep forgetting to switch your Xiaomi phone off at night or want it ready and running before you even reach for it in the morning, pressing the power button every time gets old fast. MIUI includes a built-in scheduler that turns the device on and off at fixed times you define, with support for daily repetition or custom days. Once set up, the phone handles the switching on its own, without any manual input.
Set Default Reminder Time for Calendar Events
Every new event in the Calendar app on a Xiaomi phone gets the same reminder time by default, even when it does not fit the appointment. Resetting the reminder manually for each entry gets tedious fast, especially for recurring meetings. This default value comes from a setting most people never open.
Focus & Shoot: Turn On or Off
If tapping the screen on your Xiaomi camera fires the shutter right away instead of just setting focus, Focus & shoot is switched on. Some people rely on this two-tap workflow to keep the phone steady, while others get accidental photos while they are still framing the shot.