Show or Hide RAM Info in Recent Tasks
When you swipe through open apps on your Oppo phone, the Recent tasks screen only shows app previews by default, with no memory data at all. If you want to see how much RAM is currently in use without opening a separate app or tool, that information stays hidden until you switch it on in Coloros.
Disable Mirror Effect for Front Camera Selfies
Selfies taken with the front camera on Oppo phones often come out mirrored, so text and logos appear backwards and your face looks flipped compared to how others actually see you. This happens because the camera saves the photo exactly as shown in the live preview instead of correcting the flip. The Flip Selfie setting controls this behavior, but it sits inside the advanced camera settings and is easy to overlook.
Enable Mobile Data During Calls on Secondary SIM
If your internet drops the moment you pick up a call on your primary SIM, the secondary SIM's mobile data connection is probably not allowed to take over. On dual-SIM Oppo phones this behavior is controlled separately from your normal data SIM selection, so browsing can stall mid-call even though you have a working data plan on the other slot.
Block Unknown Callers Automatically
If your Oppo phone keeps ringing from numbers that are not saved as contacts, spam calls and unknown callers get through every single time, even at night or during work. ColorOS has a built-in filter for exactly this, but it works differently from a normal blocklist. The setting rejects any caller missing from your address book, with one safety exception for repeat callers.
Screen Timeout Settings
If your Oppo display locks itself after just a few seconds while you are still reading or filling out a form, the screen timeout is set too short for how you use the phone. Coloros applies a default auto screen off value that favors battery savings over convenience. The duration can be raised or lowered anywhere between a few seconds and half an hour.
Customize Smart Sidebar Quick Access
If your Oppo's Smart Sidebar is packed with tools you never open, or missing the one app shortcut you actually need, the Quick access list needs an edit. The sidebar mixes three shortcut types: Quick Tools like screenshot or screen recording, Quick Apps that open in a floating window, and plain App shortcuts. Left unedited, you keep swiping past icons that only get in the way.
Set Dark or Light Theme for the Messages App
If the Messages app on your Oppo phone still shows a bright white background at night, it is running the light theme regardless of your system-wide dark mode setting. Coloros lets you set the theme for Messages on its own, which cuts glare and can lower battery drain on OLED screens. This option sits inside the app itself, not in the general display settings.
Check App Battery Consumption
If your Oppo phone drains faster than usual, background apps are often the reason, but WLAN, Bluetooth and screen brightness also pull a lot of power. Coloros keeps a short usage history so you can see which app or function used the most energy recently.
Change Keyboard Theme (Gboard)
If your Oppo keyboard still shows the same default look, that is because Gboard hides its theme options outside the main keyboard settings. Color combinations, gradients, and even your own photos as a background are available, but only once you know where to look.
Rename a Paired Bluetooth Device
When your Oppo phone's Bluetooth list fills up with entries like 'Speaker' or 'Headset-XYZ123', picking out the right device becomes a guessing game. ColorOS displays the broadcast name sent by the accessory itself, not a name you chose. Renaming the paired entry lets you tell devices apart at a glance, especially once you have several speakers, earbuds, or car systems saved.
Stay on the Lock Screen After Face Unlock
When you press the power button on an Oppo phone, Face unlock often skips the lock screen entirely and drops you straight onto the home screen. That means you never get to check notifications, the clock, or widgets before the phone unlocks. The setting responsible for this behavior sits inside the Face recognition options and is easy to miss.
Enable Vibration in Silent Mode
Switching your Oppo to silent mode also kills the vibration, so you miss calls and messages without any signal at all. ColorOS does not have a separate vibrate mode like stock Android, so silent and vibrate are tied together unless you change one setting. Once you know where to look, you can keep your phone quiet but still feel it buzz.
Show Connection Speed in Status Bar
If you keep opening the data usage screen just to check how fast your connection is, Oppo can show that number right next to the signal icon instead. On Coloros this real-time network speed indicator is switched off by default, so the status bar only displays signal strength and battery. Turning it on adds a live Mbps or KB/s reading that updates while you browse or stream.
Forget a Saved Wi-Fi Network
If your Oppo phone keeps reconnecting to an old Wi-Fi network with a wrong password or a router you no longer use, it is still sitting in the saved network list. ColorOS holds on to every network you have ever joined until you remove it yourself, which can cause slow reconnects or a jump to the wrong access point when two networks share a similar name.
Personal Hotspot: Change Name, Password and Band
Your Oppo phone activates a personal hotspot with a generic name and a default password, which is fine for a quick test but risky for daily use. If you want other people to recognize your hotspot easily or you need a stronger password, you have to adjust these settings yourself.
Restore Deleted Contacts from Trash Bin
A contact you deleted on your Oppo phone doesn't vanish right away. It sits in a hidden trash bin for 30 days, but only if account sync was switched on at the moment you deleted it. Without sync active beforehand, the entry never reaches that backup and recovery becomes much harder.
Change System Language on Oppo
If your Oppo phone boots up in the wrong language after a reset or a SIM swap, menus, keyboard suggestions and app names stay unfamiliar until you fix the system setting. ColorOS is a modified version of Android, so every language available on a standard Android phone is also present here, just filed under a different menu than on other brands. Many people search the main Settings screen and never find the option, because it sits inside a secondary settings group.
Turn Touch Sounds On or Off
If your Oppo phone plays a short click every time you tap the navigation buttons or on-screen keys, the 'Touch sounds' feature is active. Some people find this feedback helpful, others just want a quiet phone without extra clicks on every tap. The setting sits separately from your ringtone and notification sounds, so muting your phone will not remove it.
Default USB Configuration Settings
Connect your Oppo phone to a PC and a notification pops up every time, asking whether to charge only or transfer files. This behavior comes from a hidden developer option that most people never adjust, so the prompt keeps interrupting the same routine.
Remove a Folder from the Home Screen
Deleting a folder on your Oppo phone can go two ways: either the folder disappears together with every app icon inside it, or only the folder itself is dissolved and the apps land back on the home screen. Mixing up these two options often leads to accidentally losing apps you actually wanted to keep.
Add Another Fingerprint
If your Oppo phone only recognizes one finger, unlocking fails whenever that hand is wet, bandaged or busy holding something. Password & biometrics stores just the first scan by default, so app locks and mobile payments depend on that single print. Adding a second or third fingerprint, even from another person in the household, removes that single point of failure.
Dark or Light Theme for the Phone App
If the Phone app on your Oppo still opens in a bright white interface at night, it can strain your eyes and drain the battery faster than needed. Unlike the rest of ColorOS, the dialer and call screen sometimes keep their own display setting separate from the system-wide dark mode. Switching it manually only takes a few taps.
Turn USB Tethering On or Off
If your laptop or tablet won't get online after you plug in your Oppo phone via USB cable, the internet connection usually is not shared yet. USB tethering has to be switched on manually before the connected device can use your mobile data.
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.