Rename a Contact Group
A contact group on your Xiaomi phone keeps the name you gave it when you first created it, even after you add or remove members over time. If that label no longer fits, MIUI lets you edit it without deleting the group or losing its contacts. Default groups like Family, Colleagues or Friends are locked and cannot be renamed.
Merge Duplicate Contacts
When contacts get saved by different apps or sync sources, the same person can end up listed twice in your Xiaomi contact list. This duplication clutters your call log, messages, and search results, making it harder to reach the right entry fast. MIUI includes a built-in way to link matching entries back into a single, clean contact.
Set Default Account for New Contacts
If you keep getting asked which account to save a new contact to on your Xiaomi phone, MIUI has no default target set. This happens when Google Account, Mi Account, and one or both SIM cards are all active on the same device. Every save then triggers a manual account pick, which slows down quick contact entry.
Assign a Photo to a Contact
When a contact shows only initials or a plain avatar during calls and messages, no photo has been linked to that contact yet. MIUI lets you attach an existing picture from your gallery instead of only allowing a new snapshot. Without that link, incoming calls and chat threads stay visually anonymous even if the contact already has a name and number saved.
Add Contacts to a Group
Groups on your Xiaomi phone stay empty until you actually assign contacts to them. You can add people either from a single contact's profile or from inside the group itself, and mixing up the two methods is where most confusion starts. Knowing which screen controls group membership saves you from re-adding the same contact twice.
Block a Number from Call History
Spam calls from fake lottery winnings or gambling subscriptions keep showing up in your call log even after you hang up. On Xiaomi phones, blocking a caller straight from that log is often faster than adding them manually through Contacts. Here's what triggers the block option and where it actually lives in the Phone app.
Add a Contact Shortcut to the Home Screen
Calling the same person every day shouldn't require opening the Phone app, searching your contacts and tapping through to their number each time. On MIUI you can pin a direct contact shortcut to your home screen so a call or message starts in just two taps. This helps most with family, coworkers or anyone else you dial constantly.
Send an SMS Text Message
On a Xiaomi phone there is no separate SMS app or SMS folder, so every text lands in the same Messages inbox as MMS content. Attach a photo or video to a text and MIUI silently switches the format to MMS without asking you first. That makes it hard to tell which messages actually went out as plain SMS and which ones used mobile data as MMS.
Answer an Incoming Call on the Lock Screen
If tapping the green phone icon does not pick up the call on your Xiaomi phone, you are likely missing the swipe gesture MIUI expects. The lock screen call button reacts to a drag motion, not a simple tap, so a short or sideways swipe leaves the phone ringing until it drops to voicemail. This mainly trips up people switching from a brand that uses tap-to-answer instead of swipe-to-answer.
Set Start of Week in Calendar
If your calendar always opens on a Sunday even though you expect Monday to be the first column, the app is just following the region setting on your phone. This mismatch makes weekly planning confusing, especially when you compare dates with colleagues or family using a different week layout. A quick setting inside the Calendar app fixes the view for good.
Delete a Contact Group
If a contact group in the Xiaomi Contacts app is cluttering your groups list, you can remove it without losing the people inside it. Many users hesitate because they assume deleting a group also deletes the assigned contacts. In reality, only the group label itself gets removed, while every contact stays saved on the device.
Delete an Event in the Calendar App
If your calendar is cluttered with old appointments you no longer need, deleting individual events keeps things readable. Once removed, an event is gone for good and cannot be restored. On some Xiaomi phones the built-in Calendar app is replaced by Google Calendar, which uses a slightly different menu.
Create a New Event in the Calendar App
If a date only lives in your head, it disappears the moment you get distracted. The Calendar app on your Xiaomi phone lets you save events with a title, guests, location and repeat schedule, but many users only ever use the quick add-note shortcut and miss the full event options. Skipping the dedicated event category also means no reminder fires before the actual date.
Missed Call Reminders: Turn On or Off
If a missed call slips by unnoticed until hours later, missed call reminders are probably switched off or set to repeat only once. MIUI can nudge you again about an unanswered call, and the number of repeats is adjustable. Without this setting active, a single missed call notification is easy to swipe away and forget.
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.
Copy a Text Message
Need to reuse a phone number, code, or address from an SMS without retyping it? On Xiaomi phones the copy option for a text message only appears after a precise long press, and it is easy to miss if you tap the wrong spot on the bubble. Here is where the Copy command actually shows up inside the Messages app.
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.
Set an Alternate Calendar
If your Calendar app only shows the Gregorian calendar, dates for other systems like the Hijri, Hebrew or Chinese calendar stay invisible in event details. This is controlled by a setting hidden inside General settings that most people never open.
Change Contacts App Theme (Light or Dark)
On Xiaomi phones, the Contacts app can keep its own light or dark look even after you switch the phone-wide display mode in system settings. That mismatch happens because the app ships with a separate theme option that overrides the system default. Calls and messages screens can stay bright at night or dark during the day because of it.
Add a New Contact
Saving a new phone number on a Xiaomi device sometimes feels confusing because the Contacts app hides extra fields like birthday, address or company behind a single Add button. Many users only enter a name and number, then wonder later why the birthday never shows up in the calendar. The trick is knowing which fields to expand before you save the entry.
Power Button Ends Call Setting
Ending a call on a Xiaomi phone usually means tapping the red hang-up button on screen, which is awkward one-handed or when the display is hard to reach. MIUI has a hidden accessibility toggle that lets you end calls with the power button instead, but it is turned off by default and easy to miss in the settings.
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.
Raise to Wake: Turn On or Off
If lifting your phone doesn't wake the screen, the Raise to wake feature is probably switched off. This setting decides whether MIUI turns on the display automatically when you pick up the phone, instead of you having to press the power button for a quick glance at the time or a notification.
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.