Turn On/Off Screen-off Gestures
If double-tapping the display or drawing a quick O or V symbol does nothing while the screen is off, Screen-off gestures are probably disabled on your Oppo phone. These gestures let you open the camera, toggle the flashlight, or wake the display without pressing the power button. A single option in the convenience settings controls all of them.
Turn Bluetooth Tethering On or Off
If a paired device cannot reach the internet through your Oppo phone, Bluetooth tethering might be switched off or the device connection was never approved. This function shares your mobile data over Bluetooth instead of Wi-Fi hotspot or USB, which helps laptops without hotspot support and saves battery compared to Wi-Fi sharing. Each paired device needs the option allowed on its own before data actually flows.
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.
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.
Change TalkBack Voice Output
When TalkBack reads screen content in a voice that sounds robotic, too fast, or in the wrong accent, most people assume the accessibility feature is broken. Usually the actual voice engine, speech rate, and pitch are just set to defaults that do not match what you need. These controls sit in a separate menu from the main TalkBack toggle, which is why they are easy to miss.
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.
Turn Notification Badges On or Off Per App
If notification badges do not show up on some app icons on your Oppo home screen, the per-app Badge toggle is likely switched off. ColorOS only displays a small dot instead of a number, and each app has its own switch tucked inside the notification settings. Missing dots often get mistaken for a wider notification bug when it is really just this one setting.
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.
Add Contact to Home Screen
Calling a frequent contact on your Oppo phone often means opening the Phone app, tapping Contacts, and scrolling through the list every time. A home screen shortcut skips all of that and jumps straight to the contact's detail page, ready to call or message in one tap. Useful for family, work, or anyone you contact daily.
Enable or Disable MMS Delivery Reports
If you want confirmation that an MMS actually reached the other person, Coloros has a delivery report option hidden inside the Messages app settings. Many users assume this tells them when the message was read, but it only confirms that the MMS arrived on the recipient's device. On dual-SIM phones the setting also needs to be checked separately for each SIM.
Show or Hide Birthdays in Calendar
Birthdays from your contacts do not always show up in the calendar app on an Oppo phone, even though the dates are stored correctly in your Google account. Usually the birthday calendar layer is just switched off or the sync has not caught up yet. This affects anyone who wants a quick overview of upcoming birthdays without opening the contacts app separately.
Change Google Backup Account
If your phone backs up to the wrong Google account, storage on that account can fill up fast or you may not find your backup when setting up a new device. This mix-up usually happens after switching Google accounts on the phone without updating the backup destination in Storage and Backup. The good news is the backup account is not locked in and can be swapped at any time.
Resize a Widget on the Home Screen
If a widget on your Oppo home screen only shows a fixed size and won't stretch right after you add it, that's expected. Coloros only unlocks resize handles once the widget is already sitting on the screen, not while you're still picking it from the widget drawer. That's a different flow than on stock Android, where some launchers let you size a widget before you even drop it.
Enable or Disable NFC
If Google Pay refuses to trigger at the checkout terminal or your Oppo phone ignores NFC tags on posters, speakers and smart accessories, the wireless chip is likely switched off in the background. NFC also handles quick pairing with some headphones and smart tags, so a silent failure here breaks several features at once. Checking the toggle takes seconds but the setting hides a few menus deep on ColorOS.
Schedule Dark Mode Automatically
Switching Dark mode on and off by hand every day gets old fast, especially if you forget it at night and the screen stays bright. ColorOS lets you set fixed times so light and dark mode change on their own, but the option is easy to miss inside the display settings.
App Download Preference (Wi-Fi or Mobile Data)
New apps from the Google Play Store only download over Wi-Fi on your Oppo phone by default, and a large install can sit there waiting instead of finishing over mobile data. This is controlled by a setting inside the Play Store itself, not by Coloros. You can allow downloads over mobile data at any time, or set the Play Store to ask you every single time before it uses cellular data.
Format SD Card
If an Oppo phone keeps warning that a memory card is unreadable or unsupported, the card usually needs to be formatted before it works with photos, apps or music. Formatting is also the fastest way to wipe a used SD card clean before selling the device or reusing the card elsewhere. Every file on the card gets deleted permanently, so back up anything important first.
Change Camera Frame (Aspect Ratio)
If your photos look tighter or wider than expected, or the resolution suddenly seems lower, the camera frame ratio is probably set to the wrong option. On Oppo phones you can switch between 1:1, 4:3, 16:9 and Full, and each ratio crops the sensor differently. Which resolution you actually end up with depends on your specific model.
Create a Photo Album
When photos and screenshots keep piling up in one long timeline, finding a specific shot becomes a scroll marathon. The Gallery app on Oppo phones lets you group images and clips into albums, but ColorOS keeps the feature basic. You cannot pick a cover image, rename categories after the fact in every version, or nest one album inside another.
Display Short Calendar Entries as 30-Minute Blocks
When a day view is packed with quick appointments, entries lasting just a few minutes can shrink into thin slivers that are hard to read or tap. The Google Calendar app on Oppo phones has a display option that stretches these short entries so they take up the same visual space as a standard half-hour slot. Without it enabled, brief tasks and reminders often get buried between longer events.
Disable Automatic Power Saving Shutoff After Charging
If Power saving mode on your Oppo phone switches off by itself once the battery reaches roughly 60 percent, ColorOS is applying its built-in reset rule. That can be annoying if you want reduced performance and background limits to stay in place no matter how much charge is left.
Schedule Do Not Disturb
Turning Do Not Disturb on and off by hand every night gets old fast, especially if your sleep or work hours shift. On Oppo phones, a missed toggle means notifications either interrupt you too early or stay silent longer than planned. A saved schedule handles the on and off switch on its own, without you touching the setting again.
Sort Call History by First or Last Name
If your call log on an Oppo phone lists contacts in a mix of first-name and last-name order, finding a specific call gets tedious. The Google Phone app controls this through a display setting that is easy to overlook. Switching the sort order fixes the call list and call history at once.
Edit a Contact
When a phone number changes or a name is misspelled, the stored contact still shows the old details until you update it manually. This mix-up often causes calls or messages to go to the wrong entry, especially if the contact was synced from an old backup. Coloros lets you correct any field directly from the contact card without deleting and re-adding the entry.