Change Always-On Display Clock Style
If your Oppo phone only shows the time and battery percentage on the Always-On Display, you are missing part of what the feature can actually do. ColorOS also lets you show the date and incoming notifications, but the toggle sits a few taps deep in the display settings and gets overlooked easily.
Block or Unblock a Contact
If a contact keeps calling or texting you and you want it to stop, blocking them cuts off calls and messages without deleting the contact. On Oppo phones this option sits inside the Contacts app rather than a dedicated blocklist screen, so it is easy to overlook. Unblocking later restores calls and texts from that number right away.
Turn Call Waiting On or Off
If you miss a second incoming call while already on a call on your Oppo phone, the call waiting feature might be turned off. Some carriers switch it on by default, but the toggle sits in the phone's network settings and you can check or change it yourself.
Set Default Account for New Contacts
Every time you add a new contact on your Oppo phone, ColorOS asks you to pick a storage account, and that gets annoying fast if you always choose the same one. Switching between your Google account and internal phone storage manually wastes time and can leave contacts scattered across different places. Setting a fixed default account for new contacts removes that extra tap for good.
Turn Super Power Saving Mode On or Off
When your Oppo phone is stuck at a low charge and you need it to last through the rest of the day, Super power saving mode cuts almost everything non-essential. It switches the display to dark mode, limits which apps can run in the background, and pauses syncing to squeeze out extra runtime. That trade-off means notifications, widgets, and most third-party apps stop behaving normally until you switch the mode off again.
Turn Contact Sharing via Bluetooth On or Off
If your contacts don't show up on another device after a Bluetooth pairing, contact sharing is probably switched off for that specific connection. Coloros stores this permission per paired device, so turning it on for one phone or car system does not apply to the next device you connect.
Allow or Block App Autostart
If your Oppo phone feels slow right after a restart, too many apps are probably launching in the background automatically. Each app that keeps an autostart permission keeps running silently, draining battery and RAM before you even open it. ColorOS has a dedicated manager for this, but it is easy to miss and even easier to leave misconfigured.
Show or Hide World Clock Widget on Home Screen
Added several cities to the World Clock app but can't get them onto your home screen? On Oppo phones the World Clock only appears as a home screen widget once a specific system toggle is switched on, otherwise the app stays hidden from the widget drawer. If the widget refuses to show up, or you want to remove it without deleting your saved cities, one setting in Date & time decides that.
Remove a Widget from the Home Screen
A widget sitting on your home screen refuses to move or just clutters the layout, and tapping it only opens the linked app instead of offering a way out. On some Oppo models the widget also feels stuck in place, as if it were locked to that spot.
Delete Single or Multiple Contacts
If your contact list on your Oppo phone is cluttered with duplicate entries or people you no longer need to reach, removing them one by one gets tedious fast. The Contacts app lets you select several entries at once and send them to the trash in a single action, but the multi-select toggle is easy to miss if you only tap through individual entries. Knowing where that option sits saves you from repeating the same steps over and over.
Turn On/Off Wi-Fi and Bluetooth Scanning for Location Accuracy
If your Oppo phone shows your location several streets away, or apps take forever to pin you down in a city, the culprit is often disabled Wi-Fi and Bluetooth scanning. Coloros uses nearby networks and Bluetooth signals to fine-tune GPS, even when both radios are switched off. Without this scanning, location accuracy drops noticeably indoors and between tall buildings.
Camera Shutter Sound: Turn On or Off
Every time you tap the shutter button, the Oppo camera app plays an audible click to confirm the photo was taken. In quiet places like meetings, museums or theaters that sound can feel disruptive or draw unwanted attention. This toggle sits inside the camera app itself and works independently from your phone's ringer or notification volume.
Change What the Volume Buttons Control
On most Oppo phones the volume rocker only adjusts media volume, so lowering a call ringtone or notification sound needs a separate step. This becomes confusing when Focus mode or Do Not Disturb still lets a loud ringtone through, because the buttons were never linked to ringer volume. Switching the button function to ringtone volume closes that gap.
Set Default Keyboard
Installed a new keyboard app but Oppo keeps opening Gboard whenever you tap a text field? Activating a keyboard alone does not make it the one your phone actually uses. Until you set it as default, typing still falls back to whichever keyboard was active before.
Set an Alternate Calendar for Dates
Dates in the Calendar app only show up in the Gregorian format, even though you need a Chinese, Hebrew, or Hijri reference for religious or cultural events. This happens because the alternate calendar option is turned off by default and depends on Google Calendar being installed. Without it, Coloros only displays the classic calendar view.
Remove an Account
If an old account still shows up under Users & accounts on your Oppo phone even after signing out, it was only logged out, not removed. Removing the account deletes its local data and sync settings from the device, but the account and any data stored in its cloud stay untouched.
Limit Connected Devices on Personal Hotspot
By default, an Oppo hotspot accepts up to ten devices at once, which slows down shared data or blocks a new phone or laptop from joining once that cap is reached. If your household needs fewer simultaneous connections for better speed, or more room for extra devices, the ten-device default is not fixed. You can raise or lower it directly in the hotspot settings.
Turn On/Off Focus Mode
When Focus mode is active on your Oppo phone, the apps you marked as distracting stop running in the background, so no messages or alerts come through until you check them manually. That silence can look like a bug, especially if you enabled the feature by accident or forgot a schedule was running. Coloros keeps the block in place until you switch the mode off or the scheduled window ends.
Double-Space Period Shortcut
Typing two spaces after a word sometimes inserts a period automatically, even when you only wanted extra spacing. This happens because the Gboard text correction feature turns a double space into a full stop at the end of a sentence. If the shortcut is missing or keeps triggering unwanted periods, the option needs to be checked directly in the keyboard settings.
View Messages Stored on SIM Card
Old text messages that arrived before you switched phones often sit only on the SIM card, not in the main inbox of the messaging app. On Coloros this SIM storage is hidden by default, so those messages look like they vanished. A separate settings menu on Oppo phones brings them back into view.
Change Lock Screen Wallpaper
If your lock screen keeps showing the same picture as your home screen, ColorOS is applying wallpaper changes to both screens by default. This happens with your own photos, standard wallpapers, and live wallpapers alike. You need to pick the target screen manually to keep the two separate.
Import Contacts from a vCard File
Switching to an Oppo phone often means your old contacts sit in a vCard file or on another device, and there is no simple sync button for that. Coloros only lets you import a full .vcf file or pull contacts directly from another phone via Bluetooth, without any option to pick single entries from the list. If you only need a handful of numbers, you end up with everything from the source file instead.
Allow Calls During Do Not Disturb
If Do Not Disturb is active on your Oppo phone, calls get silenced unless you add an exception. You can choose to let calls through from everyone, only from saved contacts, or from a handful of selected people. Missing this setting means important calls go straight to silence with no ring at all.
Turn Split Screen On or Off
If a three-finger swipe up does nothing on your Oppo phone, split screen mode might be switched off in the background. ColorOS ships with the feature active out of the box, but the gesture only works while split screen itself stays enabled in the settings.