Turn Lock Screen Notifications On or Off
If notifications keep showing full message previews on your Oppo lock screen, the 'Lock screen notifications' option is likely set to display title and body for that app. ColorOS handles this setting per app, so one app can stay silent while another still alerts you. Left on the default, anyone who glances at your phone can read message content before you unlock it.
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.
Mark a Contact as Favorite
Scrolling through a long contact list every time you need to reach the same few people gets tedious fast on an Oppo phone. Marking a contact as a favorite pins them to a quicker spot in Phone and Contacts, and favorites can also double as a group exception for Do Not Disturb or a whitelist against call blocking.
Auto-Enable Power Saving Mode at a Set Battery Level
If your Oppo phone only switches to power saving mode after you tap it manually, the battery often drops further than you would like before you notice. Coloros can trigger power saving mode on its own once the battery reaches a level you choose, anywhere from 5 to 75 percent. Without this setting turned on, you have to remember to activate the mode yourself every time the charge gets low.
Set Camera Timer for Photos and Videos
Group photos rarely work when someone has to hold the phone and jump into frame at the same time. Oppo's Camera app hides a self-timer that delays the shutter for a few seconds, but the option sits inside a menu instead of the main viewfinder. Without it, group shots often end up blurry or missing a face.
Set Up a VPN Connection
If your company or university hands you server details instead of a ready-made VPN app, your Oppo phone needs a manual profile entered directly in the system settings. Without the right protocol, server address and login data, the connection fails silently or drops right after you save it. This is different from installing a VPN app from the Play Store, which handles the setup on its own.
Change Device Name
Your Oppo phone shows up as a generic model number like Reno 2 in Bluetooth lists, Wi-Fi Direct transfers, and shared network folders. That makes it hard to tell your device apart from other Oppo phones nearby, especially in a household or office with several units. Renaming it fixes the confusion in every app and connection that reads this system label.
Add Emergency Information
If you collapse or end up in an accident, paramedics often can't unlock your phone to check your blood type, allergies, or medications. Oppo lets you store that medical profile so it shows up during an SOS call, no passcode needed. Without filling it in, first responders only see your name and photo, not the details that actually matter in an emergency.
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.
Send an SMS Text Message
If your Oppo phone defaults to a chat app and you can't find a plain SMS option, the native Messages app is often overlooked once internet messengers take over daily chats. This leaves some users unsure where to start a new text conversation or how to reach a contact who does not use a messaging app. A quick look at the Messages app clears up where the SMS function actually lives on Coloros.
Set Time Manually
If the clock on your Oppo phone refuses to change no matter what you tap, the phone is still pulling the time from the mobile network. As long as 'Use time from network' stays active, the manual time field is locked or simply not shown inside Date & time. Turning that toggle off is what unlocks the option to type in your own time.
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.
Optimize Battery Consumption
If your Oppo phone drains fast even when you barely touch it, background apps are usually pulling power without you noticing. Oppo phones include a function that scans your usage and shows exactly how much charge you could save, app by app. Knowing which processes it restricts helps you decide if the automatic suggestion fits how you actually use your phone.
Custom Ringtone for Contact Groups
If every incoming call sounds the same, you can't tell whether it's family, work, or a friend without checking the screen. On Oppo phones, contact groups can each carry their own ringtone, separate from the general call sound and separate from per-contact tones.
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.
Reset Advertising ID
Ads on your Oppo phone keep matching your recent searches and app habits a little too closely. That happens because every device carries a fixed Advertising ID that links your behavior across apps for personalized ads. Turning off interest-based ads alone does not remove that link - the ID itself needs a reset.
Hide Photos and Videos in the Gallery
If a photo or video keeps showing up in your gallery even though you want it out of sight, ColorOS does not let you hide entire albums. Instead, single photos and videos get marked as private and disappear from normal browsing. Getting them back means digging into a separate area that is protected by your lock screen password, fingerprint, or face recognition.
Turn Screenshot Sound On or Off
Every screenshot on your Oppo phone plays a camera-shutter sound, even in meetings or quiet rooms. That noise comes from a dedicated toggle in the sound settings, not from the screenshot gesture itself, so silent mode alone often does not stop it.
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.
Set Up Fingerprint Unlock
If your Oppo phone still asks for PIN, pattern or password every time you wake the screen, the fingerprint sensor probably is not set up yet. Fingerprint unlock only works once a backup method like PIN or pattern is already active, since ColorOS needs that fallback to register your print. The same fingerprint also works as a shortcut to reset a forgotten lock screen password.
Change Security Question for Privacy Password
If you cannot remember the answer to your privacy password security question, you lose the only way to reset a forgotten privacy password on your Oppo phone. ColorOS ties the entire recovery process to that single question and answer, so a weak or forgotten one leaves protected apps and files out of reach. Swapping in a question you will actually remember closes that gap before it becomes a problem.
Set Default App Storage to SD Card
Running out of internal storage on your Oppo phone while the SD card sits mostly empty? You cannot install apps directly onto the memory card, but many apps let you redirect new data to it once you set the card as the default storage target. Whether this actually frees up space depends on whether the app itself supports external storage.
Add App Exceptions to Do Not Disturb
If Do Not Disturb mode silences a messaging or work app you actually need to hear from, that is expected behavior on Oppo phones, not a bug. Coloros mutes every app by default once Do Not Disturb turns on, and only apps added to the allowed list keep making sound and showing alerts. Without that exception, calls, chats and reminders from that app stay silent until you turn the mode off.
App Animation Speed
If apps on your Oppo phone take a moment too long to open or the closing animation feels sluggish, the app animation speed is probably set slower than you like. This Coloros setting controls how quickly the transition plays when you launch or close an app, separate from actual app loading time.