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.
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.
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.
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.
Delete Face Unlock Data
If you no longer want face recognition to unlock your Oppo phone, the stored face scan needs to be removed manually from the security settings. This step requires your screen lock password or PIN, and skipping it means the phone keeps trying to match your face every time the display wakes up. Some users also notice slower unlock attempts or repeated fallback to PIN entry when an outdated face profile is still active.
Show or Hide the Fingerprint Icon on the Lock Screen
On Oppo phones with an in-display fingerprint sensor, a small icon lights up at the sensor spot even while the screen is off. Some people find this glowing marker distracting at night or suspect it drains battery, and want to turn it off without losing fingerprint unlock. The toggle for this sits inside the screen-off unlock options, separate from the unlock function itself.
Remove a Saved Fingerprint
An old or unauthorized fingerprint on your Oppo phone is a security gap, especially if it belongs to someone else or was only added for a quick test. That print stays active in the background and can unlock the device or confirm payments without you noticing. Clearing it out is the only way to be sure who can actually get in.
Set Up Fixed Dialing Numbers (FDN)
If your Oppo phone dials out to numbers you did not approve, or a shared device keeps calling premium lines by mistake, Fixed Dialing Numbers can lock outgoing calls to an approved list. Incoming calls stay unrestricted, only outgoing numbers get filtered. The feature sits behind PIN2, which is easy to overlook in the carrier settings menu.
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.
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.
Turn HDR On or Off in the Camera App
Photos taken indoors or against bright windows often come out either too dark in the shadows or completely blown out in the sky. That happens because the HDR mode in the Camera app is set the wrong way for the scene you are shooting. Switching it on or off manually gives you more control over exposure than letting the camera decide on its own.
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.
Turn Screencast On or Off
If your Oppo screen does not show up on the Smart TV or another display, Screencast is often switched off or the target device is missing from the list of available receivers. Screencast mirrors your phone screen over the network, but it only works once the feature is enabled on the Oppo and the other device is discoverable. Without that active connection, nothing gets transmitted even if the TV is on and ready.
One-Handed Mode: Turn On or Off
Reaching the top corners of a large Oppo screen with a single thumb is often impossible, especially when you are holding a bag or standing on a train. One-Handed mode shrinks the whole interface into a smaller window so every icon stays within thumb range. Many users only discover this option by accident inside the Quick settings panel.
Export Contacts to a vCard File
On Oppo phones running ColorOS, the built-in export tool only saves contacts to local phone storage, not directly to a cloud service or another device. The result is a single .vcf file containing every contact detail, and you get to pick which account's contacts go into it. If you expected a direct transfer option, this local-only behavior can be confusing.
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.