Clear App Cache
When a OnePlus app starts crashing, freezing, or showing outdated content, leftover cache files are often the cause. Temporary data can pile up and overlap over time, leading to glitches that have nothing to do with your actual settings or account. Clearing the cache resets these files without touching your personal data.
Assign a Default SIM Card to a Contact
If your OnePlus phone keeps asking which SIM to use before calling a certain contact, that contact has no fixed calling SIM set. On dual SIM setups this means every outgoing call to them needs a manual choice, even if you always use the same line for that person.
Change USB Connection Type
When you plug your OnePlus phone into a PC or laptop, it defaults to charging only and blocks file access. If Windows or macOS does not show the phone as a drive, or you need MIDI or PTP mode instead of MTP, the connection mode is set wrong on the phone side.
Change Alarm Sound
If your OnePlus alarm keeps playing the same default tone even after you picked something else while creating it, a separate setting inside the Clock app controls the sound instead. This override also decides whether your own mp3 files or custom ringtones show up as alarm options at all.
Enable or Disable the App Drawer
If every installed app sits directly on your OnePlus home screen, finding anything quickly gets messy fast. Swiping up on a free area does nothing when the app drawer is turned off, leaving all icons scattered across multiple screens instead of tucked away in one list. This setting controls whether OnePlus keeps app icons on the home screens or moves them into a separate drawer you reach with a swipe.
SMS Delivery Reports: Enable or Disable
When you send a text message, you often have no way of knowing whether it actually landed on the recipient's phone. On OnePlus phones, a hidden setting can request a delivery report from your carrier for every SMS you send. If that option is turned off, or you are not sure which SIM it applies to on a dual SIM device, you will keep sending messages blind.
Set Date and Time Automatically
If your OnePlus phone shows the wrong time after a flight, a SIM swap or a factory reset, the clock has usually stopped syncing with the carrier network. Normally the device pulls date and time from the provider on its own, so no manual input is required. This only breaks when the network sync option gets switched off or someone picked a fixed time zone by hand.
Rename a Fingerprint
Every fingerprint you register on your OnePlus phone gets a generic label like Finger 1 or Finger 2, so telling your own thumb apart from a partner's index finger later is pure guesswork. Once several prints are stored for unlocking or app logins, keeping track of who owns which slot gets confusing fast.
Power Button Ends Call Setting
Struggling to tap the on-screen End call button during an active call on your OnePlus? A hidden accessibility option lets you hang up with the power button instead, but it only works once the right setting is turned on. Leave it off and pressing the power button just locks the screen while the call keeps running.
Delete Photos and Videos
Storage filling up on your OnePlus usually comes down to old photos and videos nobody looks at anymore. Deleting them from the Gallery app does not remove them right away though, since OnePlus keeps a safety copy for a while before space is actually freed up.
Manage Game Space Settings
Install a game from the Play Store on a OnePlus phone and the icon never lands on your home screen - it only shows up inside the Game Space library. That trips up a lot of players who assume the install failed. Game Space also decides whether calls, notifications and screen taps get blocked while you play, so the wrong toggle can cost you a message or an incoming call mid-match.
Swap Navigation Button Order
On a OnePlus phone using the classic navigation bar, the Back button always sits on the left and Recent Apps on the right. If your muscle memory expects the mirrored layout, or you switched from a phone with the opposite order, you keep tapping the wrong key. A single 'Swap buttons' toggle controls this order, but it hides inside the buttons and gestures settings.
Enable or Disable Location (GPS)
If regional weather widgets show the wrong city or navigation apps cannot find your position, Location access on your OnePlus phone might be turned off. Location runs by default to support GPS-based features, but constant background tracking also drains the battery faster than expected. You can check the current status and switch it directly from the quick settings panel or the main settings menu.
Enable or Disable Call Waiting
If a second call comes in while you are already on a call with your OnePlus phone, call waiting decides whether you get notified at all. Without it enabled, incoming calls during an active conversation go straight to a busy signal or voicemail. Some users also find the alert tone during calls distracting and want to turn it off entirely.
Change the Ringtone
If every call sounds the same on your OnePlus, you are probably still using the default system tone. Dual SIM users run into a different problem: both SIM cards ring identically, so there is no way to tell which line is calling. OxygenOS lets you assign a separate ringtone to each SIM, but the option sits a few taps deep in the sound settings, not in the SIM manager.
Snooze a Notification Temporarily
A WhatsApp message or other alert keeps sitting in the notification bar until you open or dismiss it, even when you just need a break from it right now. OnePlus phones have a built-in Snooze option for exactly this case, but it only shows up once you swipe the right way and it stays hidden if notification access for that app is limited. Without it, you are stuck choosing between reading the message immediately or clearing it away for good.
Add an App Shortcut to the Home Screen
When the app drawer is turned on, your home screen stays mostly empty and every app only shows up in the full overview list. That means an extra swipe and tap each time you want to open something you use daily. Adding a direct shortcut fixes that without switching off the drawer.
Disable Screen Animations
If your OnePlus feels sluggish when switching apps or opening menus, fade-in effects and shadows are often the cause. These transition animations use extra graphics processing and RAM every time a window or panel appears. Turning them off frees up resources without changing anything else about how your phone behaves.
Turn Off Wi-Fi Hotspot Automatically
If your OnePlus hotspot stays on for hours after everyone has disconnected, it keeps draining battery for no reason. This happens when the automatic shutoff for the Wi-Fi hotspot has been switched off or was never turned on. The setting only kicks in once no device has been connected for a few minutes.
Enable Developer Options
If USB debugging, extra logging or other tweaks are missing from your OnePlus, the developer options are still hidden. Without them you cannot access advanced system tools like ADB access or performance overlays. OxygenOS keeps this menu hidden by default to protect casual users from unwanted changes.
Change Notification Sound
If the same notification tone keeps going off for every text, WhatsApp message or app alert on your OnePlus phone, it is easy to start tuning it out. OxygenOS comes with a handful of preset tones, and you can add your own audio files once those feel repetitive. The setting that controls this sits a few taps deep in the sound options, which is why many people never change it.
Allow or Deny System Settings Permission
Some apps on your OnePlus phone ask to change system settings on their own, like the wallpaper or ringtone. This permission only covers those convenience settings and has no effect on security features such as the screen lock.
Switch Keyboard Language While Typing
Typing a message that mixes two languages and the keyboard keeps autocorrecting the wrong one gets annoying fast on a OnePlus phone. Most keyboards let you swap languages mid-sentence, but the trigger for that switch is not always obvious. Some people tap a small globe icon near the space bar, others just hold the space bar down and get nothing.
Change App Icon Shape and Style
If every app icon on your OnePlus home screen still looks like a plain square or circle, the icon shape setting is likely still on the default option. Switching between the pre-installed icon packs or a downloaded one changes the outline of every app symbol at once, but the option is easy to miss inside the home screen settings. Some downloaded packs also only apply partially if a step gets skipped.