Turn Vibrate on Touch On or Off
If your Oppo phone buzzes every time you tap the navigation bar, open a menu, or dial a number, the touch feedback vibration is switched on. This system-wide haptic response can feel excessive on Coloros, especially when it triggers during simple actions like scrolling through settings or answering calls. You can turn it off without changing your ringtone or notification vibration settings.
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.
Connect to Wi-Fi via WPS
Typing a long Wi-Fi password on a small keyboard gets old fast, especially with random character strings. If your router supports WPS, your Oppo phone can skip that step entirely and pair using a physical button push instead. This only works while both devices are actively listening for the WPS handshake at the same time.
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.
Turn On/Off Emergency SOS
If pressing the power button five times keeps launching Emergency SOS by accident, or the shortcut refuses to trigger when you actually need it, the Emergency call quick access toggle is probably set the wrong way. The feature works straight from the lock screen and dials your saved emergency contacts, so an unwanted trigger during everyday use can be just as annoying as a missing one in a real emergency.
Turn Emergency Alerts On or Off
If your Oppo suddenly blasts a loud siren-style alert during a meeting or at night, Wireless emergency alerts is doing exactly what it is designed for. These cell broadcast warnings about extreme weather or safety threats are switched on by default under ColorOS, and many users only notice the setting once an unwanted alert interrupts them.
Set a Custom Notification Sound
If every notification on your Oppo plays the same generic chime, the built-in sound list is probably too limited for you. Sound settings on ColorOS include a Select from files option that scans your phone's storage for compatible audio automatically. That means you can assign your own MP3 as a notification tone instead of picking from the default set.
Add and Manage Words in the Personal Dictionary
If your Oppo keyboard keeps autocorrecting names, abbreviations, or technical terms you actually want it to remember, the built-in Personal dictionary is likely empty or missing those entries. ColorOS lets you store custom words and optional shortcuts so the keyboard suggests them instead of fighting you. This mainly affects people who type industry jargon, nicknames, or non-standard spellings regularly.
Show or Hide Holidays in Calendar
If your Oppo calendar is suddenly full of public holidays you never asked for, or they vanished and you want them back, the built-in Google calendar sync is the reason. The holiday data comes straight from the region set in your Google account, not from a manual list you control. A single toggle in the calendar menu decides whether these entries show up at all.
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.
App Drawer: Turn On or Off
New apps on your Oppo landing straight on the home screen instead of a separate app list usually means the App Drawer is switched off. Without it, every install adds another icon to your screen, and there is no dedicated overview to browse through installed apps. On ColorOS this behavior is controlled through the home screen layout mode, not a standalone app-drawer toggle.
Turn Assisted Dialing (Roaming Assistant) On or Off
Calling contacts while traveling can fail on an Oppo phone because Assisted Dialing quietly inserts a country code you never asked for. This roaming assistant reacts whenever the network detects you outside your home country, even for numbers that would normally dial fine without a prefix. If that auto-added code breaks the call or reaches the wrong number, the fix is to switch the feature off and dial manually.
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.
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.
Turn Off App Lock
If Oppo's App lock keeps asking for your privacy password every time you open a protected app, that extra step gets old fast. Turning off App lock releases all currently locked apps and their data at once, so the password prompt stops appearing. You still need to confirm your privacy password to make the change.
Manage App Permissions
Oppo apps often ask for access to storage, location, or contacts right after installation, and the request rarely explains why the permission is needed. Granting everything by default can let apps read data they never use for their actual function. ColorOS lets you review and change each permission per app at any time, without reinstalling anything.
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.
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 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.
Set Recovery Email for Privacy Password
Locked out of your app lock or private safe because you forgot the privacy password? Without a recovery email saved in advance, Oppo gives you no way to reset it. Once an address is linked, the 'Forgot password' option lets you create a new privacy password.
Turn Off TalkBack (Accessibility)
If TalkBack is running on your Oppo phone, a single tap only selects an item and reads it aloud instead of opening it. Every action now needs a confirming second tap, which makes even switching TalkBack off feel out of reach. This select-then-confirm control catches most users off guard exactly when they try to disable the feature.
Allow or Deny Apps to Modify System Settings
If an app suddenly asks for permission to modify system settings, it usually wants to adjust things like your ringtone, brightness, or wallpaper, not your lock screen or passwords. On ColorOS this permission sits deep inside the special app access menu, so most users never find it on their own. Without it, some apps fail silently when they try to change these settings automatically.
Turn Keyboard Sound On or Off
Typing without any click sound, or suddenly hearing it after a system update, can be confusing since Oppo phones don't have a dedicated keyboard sound toggle inside ColorOS itself. The setting actually lives inside the Gboard app that most Oppo devices use by default. On many devices this sound is turned off from the start, leaving you unsure where to look for it.
Set Alarm Ring Duration
If your Oppo phone's alarm cuts off after just 5 minutes and you keep sleeping through it, the ring duration is still on the default setting. You can stretch it up to 30 minutes or shorten it to as little as 1 minute, depending on how deep a sleeper you are.