Turn On/Off Magnification (Accessibility)
If text and icons on your Oppo phone are too small to read comfortably, the built-in magnification tool works like a digital magnifying glass. A triple tap on the screen opens a zoom window that you control with a two-finger pinch. The feature covers the entire display except the keyboard and navigation bar, and many users cannot find where to switch it on or off.
Unlock Private Safe with Fingerprint
Typing in your privacy password every time you want to check files in Private Safe gets tedious fast. Oppo phones let you swap that PIN, pattern or password entry for a fingerprint tap, but the toggle sits buried inside biometric settings and stays off by default. Without switching it on, the fingerprint sensor you already use to unlock your phone has no effect on the vault.
Set Default SIM Card for Calls
With two SIM cards active on your Oppo phone, the system decides on its own which SIM handles an outgoing call unless you set a fixed one. If calls keep going out on the wrong SIM, or ColorOS asks you every single time which line to use, the calling preference in your dual-SIM settings is the setting responsible.
Remove an App Shortcut from the Home Screen
If a shortcut icon refuses to disappear when you try to clean up your Oppo home screen, the App Drawer setting is usually the reason. With App Drawer enabled, removing a shortcut only deletes the icon, not the app. Without it, home screen icons and installed apps are the same thing, so removing one uninstalls the other.
Show or Hide the Emoji Switch Key on Gboard
On Oppo phones with Gboard, an emoji icon sits next to the space bar by default, letting you jump straight into emojis while typing. If you rarely use it, or you actually need that spot for the language switch button instead, the emoji key gets in the way. Both buttons cannot be shown at the same time, so one always replaces the other.
Delete Photos or Videos
Storage fills up fast when old photos and videos pile up in the Oppo Gallery app, and deleting them one by one feels endless. Switching to edit mode lets you select several files at once, but the items you remove do not disappear right away. They sit in the Trash for a while first, which still counts against your free storage until they are cleared out.
Send a Photo via Bluetooth
A photo from the camera or Gallery does not reach a paired device automatically, and the Bluetooth send option is easy to miss inside the sharing menu. Bluetooth transfer only works once a device is paired and switched on, but the actual command sits in the Send sheet, not in the Bluetooth settings screen. The same process applies to PDFs, videos, contacts and other file types, not just photos.
Turn On or Off Video Subtitles
Videos with subtitle tracks often play without any captions showing up on an Oppo phone, because the subtitle option is switched off by default. If you rely on captions for language learning, noisy environments, or hearing support, this can make watching content frustrating until the right accessibility setting is found.
Turn On Automatic Network Selection
If your Oppo phone stopped switching carriers on its own, someone likely turned off Auto select while picking a network manually. Without automatic selection enabled, the phone stays locked to one operator even when a stronger signal sits nearby. This mostly happens on Coloros devices where the toggle hides inside the SIM card settings rather than the main network menu.
Turn High Performance Mode On or Off
If your Oppo phone drains battery fast or feels hot during gaming, High Performance Mode might already be active in the background. This setting disables every energy-saving feature to push maximum speed, which trades battery life and temperature for smoother performance.
Turn Screen Wake for Notifications On or Off
If your Oppo's display stays black when a new message or alert arrives, you have to unlock the phone just to see what happened. ColorOS controls this behavior through a dedicated notification setting that most people never notice. Once you find it, you can decide whether the screen should light up automatically or stay off to save battery.
Turn Glide Typing On or Off
Typing every letter by hand feels unnecessary when Gboard can turn a single finger swipe across the keyboard into a full word. On some Oppo phones, Glide typing stays switched off by default, so swipe gestures do nothing and the keyboard falls back to individual key taps. Whether you want faster input or need to stop an accidental swipe trigger, the setting sits hidden inside the keyboard menu.
Connect via Wi-Fi Direct
If your Oppo phone will not show up when you try to send files to another phone, a TV stick or a smart appliance, Wi-Fi Direct is likely turned off or the target device is not currently visible. Both sides need the feature active and discoverable at the same time, otherwise the device list stays empty. This is different from a normal Wi-Fi network connection, which is why regular network settings will not fix it.
Add Trusted Devices for Smart Lock
If your Oppo phone still asks for a PIN even though your smartwatch or Bluetooth headset is connected, Smart Lock likely does not have that device listed as trusted yet. Trusted devices keep the phone unlocked automatically as long as the Bluetooth connection to a paired accessory like a fitness tracker, car handsfree, or headphones stays active. Pairing alone is not enough - the accessory has to be added to the trusted list before automatic unlock kicks in.
Turn Bluetooth On or Off
Bluetooth on an Oppo phone stays switched on out of the box, so it keeps scanning for nearby devices even when you never connect anything. That constant scanning quietly drains the battery, especially overnight or during long periods without any paired accessory.
Force Stop an App
When an app on your Oppo phone freezes and stops reacting to taps, swiping it away in the recent-apps view often just hides it while the process keeps running. Force stop ends that process directly, similar to Stop task on a Windows PC. Because it kills the process without saving anything, you usually land on a login screen the next time you open the app.
Change Default Dialer App
If you have installed a second calling app on your Oppo phone, incoming calls might still open the wrong app or not ring through the app you actually want to use. This happens because ColorOS only routes calls through whichever app is set as the default phone app.
Change Home Screen Wallpaper
Tapping and holding the home screen only pulls up a handful of preset wallpapers on Coloros, so live wallpapers and your own photos are easy to miss. This happens because the quick wallpaper shortcut hides the full Wallpapers settings section, leaving many users thinking custom or animated backgrounds are not supported at all.
Turn Find My Device On or Off
If your Oppo phone goes missing, a deactivated Find My Device feature means you lose any chance to track, lock, or wipe it remotely. Many users only discover the toggle is off after the device is already gone, since it sits inside the Security menu rather than a separate app. Checking its status now takes less than a minute and closes that gap before it becomes a problem.
Turn Off Notifications for a Single App
If one chatty app keeps flooding your lock screen while everything else stays quiet, a blanket notification toggle wont fix it. On ColorOS you can allow or block alerts per app instead of turning notifications off system-wide.
Turn On/Off Silent Mode
If your Oppo phone stays quiet during calls and texts but the alarm or music still plays at full volume, Silent mode is likely active. It mutes incoming calls and SMS notifications and can optionally allow vibration, while media and alarm volume stay untouched. Many users mistake this for a broken speaker or a vibration setting that will not turn off.
Turn Google Play Protect On or Off
If Google Play Protect keeps blocking an app you trust or throws a warning notification every time you install something, the built-in scanner is doing its job a bit too aggressively. On Oppo phones this security check runs in the background by default and can interfere with sideloaded apps or apps from outside the Play Store. Turning the scan off, or back on, changes how much control Android has over what runs on your device.
Allow Display Over Other Apps
When Messenger, Facebook chat heads or a call app refuse to pop up on top of other apps, the floating windows permission on your Oppo phone is usually switched off. Without this permission the app can only run in the foreground and loses its quick-access overlay. This affects chat bubbles, screen recorders and any tool that needs to draw over your current screen.
Enable High Contrast Text
Small system fonts on Oppo phones can be hard to read in bright light or for users with low vision. The 'High contrast text' option in Accessibility boosts contrast between letters and background without changing the actual font size. If the toggle stays hidden, it usually sits inside a submenu that is easy to overlook.