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.
Change Time Zone Manually
If you swap SIM cards or connect to a foreign network, your Oppo phone often jumps to the wrong time zone on its own. Clock apps, alarms and message timestamps can then be off by hours, because Coloros pulls the zone from the current network instead of your actual location.
Turn Gesture to Take Photo (Show Palm) On or Off
If your Oppo camera keeps snapping a shot every time you raise an open hand in front of it, the Gesture to take photo (Show Palm) feature is doing exactly what it was built for. It watches the frame for a palm and fires the shutter automatically, which is handy for hands-free selfies but annoying when a hand passes by accident. Whether you want it running or off depends on how you actually use the camera.
Turn Lens Stain Detection On or Off
If your Oppo camera keeps flashing a dirty lens warning even after you wiped it down, the automatic lens stain detection is misreading brightness patterns near the edge of the frame. This ColorOS check can misfire in low light, with wet fingers, or when a case sits close to the lens ring. Switching the feature on or off changes how often that banner shows up while you shoot.
Turn On/Off Autofill Service
If a form keeps suggesting old addresses, outdated passwords, or the wrong Google account whenever you tap a field, the Autofill service on your Oppo phone is likely still linked to a provider you no longer want active. This often happens after switching Google accounts or installing a password manager that never became the default. Turning the current service off - or picking a different one - is the only way to stop the wrong data from popping up.
Change Home Screen Grid Size
If your Oppo home screen feels cramped with too many icons squeezed into each row, or the tiles look oversized with too few apps per screen, the grid layout is set to a fixed size. Coloros offers several grid options, usually starting with 4x6 and 5x6, and some models add extra layouts. Picking the wrong size can cut off app names or leave large empty gaps between icons.
Lock Screen Sound On/Off
Locking or unlocking your Oppo phone stays silent by default, so you never hear an audible cue that the screen actually locked. If you rely on that click as feedback, the missing tone can make it seem like the lock did not register. The toggle controlling this sits inside the sound and vibration settings, separate from ringtone and notification volume.
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.
Adjust Screen Brightness (Manual & Automatic)
When the screen stays too dim indoors or turns painfully bright at night, auto-brightness on your Oppo phone is likely misreading the light around you. The quick slider in the notification shade only gives a rough fix, and many owners never open the full display settings where the actual control sits. Switching between automatic and manual mode changes how reliably the screen matches the room.
Change Keyboard Location
If the on-screen keyboard on your Oppo phone sits too close to the bottom edge, reaching the top row with your thumb becomes awkward during one-handed typing. Coloros offers a setting that adds blank space below the keys, shifting the whole keyboard upward. This makes a noticeable difference on larger displays where the default position feels too far down for comfortable use.
Ringtone Volume Settings
If your Oppo phone rings too quietly or too loudly during calls, but notification sounds seem fine, you are likely looking at two separate volume sliders. Ringtone volume and notification volume run on independent controls, so adjusting one does not touch the other. This mix-up leads many users to think their phone volume is broken when it is just set on the wrong slider.
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.
Set Date and Time Automatically
If your Oppo phone shows the wrong time or date after a SIM swap or a trip abroad, network time sync has likely been switched off. This setting decides whether ColorOS keeps the clock updated from your carrier network or waits for you to enter it manually.
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 Off Screen Lock
If entering a PIN or pattern every time you check your phone feels unnecessary, you can remove the lock screen password on your Oppo phone entirely. The option sits under Password & biometrics and needs your current unlock code to confirm the change. Once disabled, the screen no longer asks for a code and unlocks with a simple swipe.
Set a Monthly Mobile Data Limit
If your Oppo phone keeps burning through your data plan before the billing cycle ends, you are probably missing a cap on mobile data usage. Without a monthly limit set, ColorOS keeps mobile data active even after you cross your contract volume, leading to extra charges. Setting a fixed limit lets the system cut mobile data automatically once you hit that number.
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.
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.
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.
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.
Turn Camera Watermark On/Off
If every photo or video from the camera app carries an unwanted overlay with the phone model, date, time, or location, ColorOS added that watermark automatically. On some Oppo phones the setting stays active after a reset or software update. It only affects the built-in Camera app, not third-party apps or the gallery.
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.
Pin a Conversation to the Top
If an important SMS thread keeps getting buried under newer messages, the Messages app on Oppo phones is sorting everything by latest activity only. There is no default setting that keeps one contact permanently visible. Pinning changes that behavior so the conversation stays first no matter what arrives afterward.