Show or Hide Calendar Week Number
When you book a meeting or deadline, you often need the calendar week number, and the OnePlus Calendar app does not show it by default. That forces you to count weeks manually every time you check a date. The Show week number setting controls whether week numbers appear next to the days in your calendar view.
Disable TalkBack
If TalkBack turns every tap into a double-tap and swipes now switch between items instead of scrolling, the accessibility service is still running in the background. Reaching the toggle to stop it feels different from a regular settings visit, since TalkBack itself changes how you interact with menus while it is active.
Set Date Manually
If your OnePlus phone keeps resetting the date to the network value, the automatic time sync is still active in the background. This function pulls the date directly from your carrier and overwrites any manual change you make. You need to disable it before a custom date will actually stick.
Enable or Disable Notifications for a Single App
One chatty app keeps buzzing your OnePlus phone while every other app stays quiet, and muting the whole device feels like overkill. This usually comes down to a per-app notification toggle that also controls sound and vibration for that specific app. Turning it off does not affect any other installed app.
Change Media Volume for Apps, Games and Videos
If Netflix, YouTube or a game suddenly blast out sound while your ringtone stays quiet, you are running into OnePlus's separate media volume control. This slider governs all in-app audio, including games, streaming apps and even played WhatsApp voice messages, independent from calls and notifications. Turning up the wrong slider in Quick Settings often leaves the actual media level untouched.
Make a Phone Call with the Phone App
If your OnePlus phone keeps asking which SIM card to call from every time you dial, or a call quietly goes out through the wrong number, the Phone app's Dual SIM handling is usually behind it. This mostly affects setups with two active SIM cards where no default line has been set for calls. Knowing where that selection lives saves you from mixed-up bills and missed callbacks.
Power Button for Quick SOS
If your OnePlus suddenly dials the emergency number after you press the power button several times in a row, the quick SOS option in Security & Privacy is active. This shortcut is meant to speed up emergency calls, but it can trigger by accident in a pocket or bag. Knowing where this setting lives helps you switch between three or five presses, or turn it off completely.
Set Dark or Light Theme for the Messages App
If the Messages app on your OnePlus phone still opens in a bright white layout at night, the built-in theme option is likely set to Light or System default instead of Dark. This app-level 'Choose theme' setting works independently from your phone's overall system theme, so changing one does not automatically change the other. Left on the wrong setting, this means unnecessary eye strain in dark rooms and slightly higher battery drain on an AMOLED screen.
Pocket Mode: Enable or Disable
If your OnePlus phone keeps launching apps, dialing numbers, or waking the screen while it sits in your pocket, the built-in touch protection might be switched off. Pocket mode is meant to lock the display and fingerprint scanner whenever the phone detects it's stowed away, but the toggle can slip back to its default state after an update or reset. Here's what controls the behavior and how to check the current setting.
Allow Calls in Do Not Disturb Mode
If Do Not Disturb on your OnePlus phone silences calls from people who actually need to reach you, the default setup is blocking everyone by mistake. Call and message exceptions in Do Not Disturb are handled separately, so muting WhatsApp or SMS alerts does not automatically decide who can still call you. Adjusting the call exception lets you pick between all contacts, only favorites, or nobody at all.
Change Keyboard Height
If you turned on the extra number row in Gboard, the keyboard on your OnePlus phone can suddenly take up a large chunk of the screen. That leaves less room to read messages while typing and can feel cramped on smaller displays. Gboard offers several height presets, from Extra-short up to Normal and beyond, so you can pick a size that matches your hand and screen.
Restart the Phone
If your OnePlus phone feels sluggish, apps stall in the background, or a fresh update refuses to finish installing, a restart usually clears the mess. Cache buildup and stuck background processes are the most common triggers. A quick restart resets these without touching your data.
Add a Birthday to a Contact
Birthdays entered on other phones or synced accounts do not always show up in a OnePlus contact card, especially when the Date field defaults to a different label like Anniversary. Without the correct field type, the birthday reminder never triggers in Calendar or the dialer app. This causes missed birthday notifications even though the date is technically saved somewhere in the contact.
Show or Hide Holidays in the Calendar App
If your OnePlus calendar shows a public holiday on almost every day, actual appointments get pushed down and easy to miss. This happens because the calendar app displays regional and national holidays by default, on top of every synced account. The more accounts you have connected, the more crowded the day view becomes.
Sound & Vibration for Calendar Reminders
Missed calendar reminders on a OnePlus phone are often caused by a disabled sound or vibration setting inside the Calendar app itself, not by the phone's general ringtone. Without an active sound file or vibration pattern, alerts for appointments and events can pass by completely unnoticed.
Enable or Disable App Notification Dot
If a small dot keeps sitting on top of an app icon even after you already read the message or checked the missed call, the Allow notification dot setting is likely active for that app. OxygenOS adds this dot per app whenever a new notification arrives, and it stays visible until the notification is cleared or opened. Some apps show it constantly, which gets distracting if you only want the dot for apps that really need your attention.
Read in Background for Select to Speak
When Select to Speak is reading text aloud on your OnePlus phone, switching to another app usually stops the narration mid-sentence. The Read in background option keeps the voice going while you jump between apps, but it stays an experimental feature that can behave inconsistently. If speech cuts out unexpectedly or keeps running when you do not want it to, this setting is the reason.
Show Typing Indicators: Enable or Disable
If your chat partner keeps seeing you are typing even during short pauses, the Show typing indicators feature is broadcasting your input status. This works the same way as the typing bubble in WhatsApp, letting others know a reply is on the way. Turning it off removes that pressure without touching any other messaging setting.
Add Users from Lock Screen (Enable/Disable)
Anyone who picks up your locked OnePlus can still create a new user profile if 'Add users from lock screen' is turned on. That option sits inside the multi-user settings and lets someone add an account without ever unlocking your device first. Turning it off limits the lock screen to switching between profiles that already exist.
Enable or Disable JavaScript in Chrome
If buttons, menus or forms stop responding on a website you open on your OnePlus phone, JavaScript in Chrome may be switched off. Most modern sites rely on JavaScript for navigation, dynamic content and interactive elements, so turning it off can leave pages looking broken or unusable. You can check the current status and change it directly inside the Chrome app.
Volume Key Shortcut to Start Accessibility Feature
If pressing and holding the volume buttons does nothing on your OnePlus phone, the volume key shortcut for accessibility features is probably switched off or linked to the wrong service. This shortcut is meant to jump straight into functions like TalkBack, Select to Speak or Switch Access without opening any menu first. Whether the gesture works from the lock screen or only inside an unlocked phone depends on one extra setting that is easy to miss.
Choose Which Contacts Are Displayed
If your OnePlus phone shows every saved number in one giant list, work contacts and personal ones end up jumbled together. This happens because the Contacts app pulls entries from every linked account and group by default, with nothing filtered out. Sorting this out keeps the list focused on the people you actually need to see.
Lock Apps with an Extra Password
If anyone who picks up your unlocked OnePlus can open banking, messaging or gallery apps without any extra check, App locker is still switched off. OxygenOS can require your lock screen password or pattern again before those specific apps open. You can also decide whether notification previews from locked apps still show up on the lock screen.
Create a Folder on the Home Screen
When your OnePlus home screen fills up with icons, finding the right app takes longer every time. OxygenOS does not sort apps into categories automatically, so scattered icons for messaging, games, or tools quickly turn into visual clutter. Grouping related apps into a named folder keeps the layout manageable without deleting anything.