Schedule Do Not Disturb Mode
Turning Do Not Disturb on and off by hand every night or before every meeting gets old fast, and it is easy to forget switching it back off, leaving missed calls and messages piling up. On OnePlus phones, the Do Not Disturb schedule inside Sounds & vibration can handle that timing for you, based on either a fixed time window or calendar events. Multiple schedules can run at once, each with its own days and hours.
Delete Cookies in the Browser App
If a website keeps asking you to log in again or shows outdated settings even after you cleared your history, leftover cookies in your OnePlus browser app are usually the cause. Cookies pile up over weeks of browsing and can also slow down page loading on sites you visit often.
Disable Gmail Event Sync in Calendar
Booking a flight or a restaurant table on your OnePlus phone can suddenly add an extra appointment to your Calendar app that you never created manually. This happens because Gmail automatically forwards detected reservations and bookings as calendar events for every linked Google account. If you only want your own manually added appointments to show up, that automatic sync needs to be turned off.
Enable or Disable Spam Protection in Messages
If the Messages app on your OnePlus keeps flagging normal texts as junk, or unwanted spam keeps slipping through unfiltered, the built-in spam protection setting is worth checking. This feature scans incoming messages and reports rough details to Google, without sending your phone number or the message content itself. You can switch it on or off depending on how much filtering you actually want.
Install an App from the Google Play Store
Not sure whether the app you found online is safe to install on your OnePlus, or why the Install button in a store listing sometimes stays greyed out? The Google Play Store is the built-in source for messengers, games and system tools, but search results, region locks or missing sign-in can get in the way of a straightforward install.
Add a Second Account
After the first setup, your OnePlus phone only keeps the Google Account you signed in with during activation. If you use a second Gmail address, a work Exchange account, or an Outlook inbox, none of that syncs until you register it separately. Apps like Facebook or WhatsApp handle their own login and never show up in this list.
Pair a Bluetooth Device
If your OnePlus phone does not detect your headphones, speaker, or inEars, the accessory is often still in a locked pairing state or Bluetooth is switched off on the phone. Sometimes a short PIN prompt shows up during the connection and has to be confirmed on both sides before audio actually starts working.
Control App Data Usage
If YouTube or Netflix keeps burning through your mobile data plan even when you did not mean to stream over cellular, a background permission is usually the cause. OxygenOS lets you set a data policy for every single app, but most people never open that screen. Without a manual override, apps default to using whatever connection is available, including your mobile data.
Enable or Disable Hearing Aid Compatibility (HAC)
If your hearing aids pick up static, buzzing or a faint hum during calls on your OnePlus phone, the built-in audio output might not be tuned for hearing aid compatibility. This setting changes how the earpiece sends sound so hearing aids can pick up a cleaner signal, but it can also make calls sound different for people who don't use hearing aids. Getting this setting wrong in either direction leaves one group with poor call audio.
Enable or Disable Colour Correction
If colours on your OnePlus screen look inaccurate or hard to tell apart, especially reds and greens, the built-in colour blindness support might help. OxygenOS includes a colour correction feature that shifts on-screen colours to compensate for common types of colour vision deficiency. Picking the wrong correction mode can leave photos or app graphics looking washed out instead of clearer.
Set Up Private DNS
Every website you open on your OnePlus phone starts with a DNS lookup, and by default that request travels unencrypted across your network. Anyone sharing your Wi-Fi or your mobile carrier can see, log, or even redirect which domains you visit. Private DNS closes that gap by routing the entire lookup through an encrypted connection.
Set a Custom Notification Sound
Every SMS or Messenger alert on your OnePlus still plays the same stock tone, even after you scroll through the built-in sound list twice. OxygenOS does support your own audio files as notification sounds, but the option to load a custom file sits one menu deeper than the regular tone picker. Until that file is placed correctly on your phone, the system keeps falling back to the default ringtone.
Enable or Disable TTY Mode
If a hearing or speech aid device cannot connect to calls on your OnePlus, TTY mode is probably switched off in the Phone app. Without it, the phone cannot convert voice to text or text to voice during a call, which makes standard calling unusable for TTY users. The setting sits in the accessibility options of the Phone app and is off by default.
Add Contact to Favourites
Calling the same person over and over means scrolling through your whole contact list every time on your OnePlus phone. Marking that contact as a favourite pins it to the top of the Contacts app, so you skip the search entirely. It is a quick fix if you keep hunting for the same few names.
Enable or Disable Call Barring
If you are traveling abroad with your OnePlus and want to avoid unexpected roaming charges, call barring lets you block specific call types before they even connect. You can restrict outgoing calls, incoming calls, or international calls depending on which option you activate. Without the right setting enabled, calls still go through as usual and charges keep piling up.
Create a New Event in the Calendar App
Forgetting a meeting usually comes down to never adding it to the Calendar app in the first place. On OnePlus phones, new entries split into four types - Event, Task, Reminder or Goal - and picking the wrong one can leave out details you actually need, like location or repeat settings. Knowing which type to choose upfront saves you from redoing the entry later.
Pairing Messages for Web with a PC
If you want to reply to texts without picking up your phone every time, pairing Messages with a browser tab on your PC solves that. The catch is that the phone still has to handle every message in the background, so the web session depends entirely on a working connection between the two devices. Many users get stuck at the QR code step because they open the wrong menu or use a browser that blocks the scanner.
Show Date and Location of Photos and Videos
Wondering exactly when a shot was taken or where you were standing at the time? OnePlus stores that data inside the file itself, but the Gallery thumbnail never shows it. Location tags only appear if geotagging was active in the camera app when the photo or video was captured.
Enable or Disable Auto-Sync for Personal Data
Contacts, calendar entries and app data can update automatically the moment you change them online or on another device. If Auto-sync personal data is switched off, those changes stop reaching your OnePlus phone until you sync manually or turn the option back on.
Enable or Disable Screen Cast
If your OnePlus phone won't show up when you try to mirror the display to a smart TV, monitor or Fire TV Stick, the Screen cast function is often switched off or blocked by a network mismatch. Wireless mirroring only works when both devices sit on the same Wi-Fi network, so a hidden toggle or a wrong network can quietly break the connection. Some OnePlus units also link this feature to a separate casting toggle, which adds another spot where it can get disabled.
Stopwatch: Start, Pause and Lap Timer
Trying to time a workout or a recipe on your OnePlus phone but the stopwatch buttons seem to do nothing when you tap them? The Clock app bundles a stopwatch with lap timing, but Start, Lap, Pause and Reset only respond in a fixed order. Tap them out of sequence and the stopwatch either freezes on the current time or the lap list stays empty.
Enable or Disable Fixed Dialing Numbers
If your OnePlus phone suddenly blocks calls to numbers that are not on a specific list, Fixed Dialing Numbers (FDN) is probably active. This call restriction only allows contacts stored on the SIM card to be dialed, which many parents use to limit a child's phone to a few approved numbers. Turning FDN on or off always requires the PIN2 code from your carrier, not the regular SIM PIN.
Enable or Disable the Emoji Switch Key
Typing emojis on your OnePlus normally means holding down the language key or hunting through a separate emoji panel, which slows you down in chats and emails. A dedicated emoji key on Gboard puts the smiley picker one tap away, but it swaps places with the globe icon used to switch languages. If you type in more than one language, that trade-off matters before you turn the option on.
Stop Battery Saver Turning Off After Charging
If Battery Saver on your OnePlus phone switches off by itself once charging passes roughly 90%, the „Turn off when fully charged“ option is behind it. That's inconvenient if you want power saving to stay active no matter how full the battery is.