Turn On/Off Contact Suggestions in Messages
Typing a name into a message on an Oppo phone should pull up matching contact details automatically, but nothing shows up. This happens because the 'Suggest Contacts' feature inside the keyboard settings is switched off by default, even though the contact itself is saved correctly on the device.
Sync Calendar Manually
If new appointments or updated events on your Oppo phone do not show up right away, the Calendar app has not run its automatic sync yet. This mostly happens with entries added right after you last opened Calendar, since Coloros only refreshes data on launch or on its own schedule. A manual sync fixes this without waiting.
Check for Software Updates Manually
If your Oppo phone hasn't picked up a new ColorOS version yet, waiting for the automatic background check can take days. The system only looks for firmware at set intervals, so a pending patch or security fix might sit unnoticed for a while. Triggering the check yourself confirms right away whether a new update is actually available.
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.
Set Up a Proxy Server for Wi-Fi
If you want to browse without exposing the real IP address of your Oppo phone, a proxy server routes your traffic through a different address. Without one set up, every app and website still sees your actual connection details. A proxy only works once you are already connected to a Wi-Fi network.
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.
Block a Phone Number from Call History
Getting repeat calls or texts from the same number on your Oppo phone and want them stopped for good? A quick way is to block that entry directly from your Call history, so future calls and messages from it get filtered out automatically. By default you still see a notification when a blocked number tries to reach you, which can throw people off if they expect it to go completely silent.
Using the Stopwatch
If you want to time an activity or track individual laps on your Oppo phone, the stopwatch inside the Clock app handles both jobs at once. Many people only notice the lap counter after already tracking split times by hand, which makes the built-in option worth knowing.
Show Device Certification Info
If you need to confirm that your Oppo phone carries the right regulatory marks for your country, the certification numbers are not printed anywhere on the case. Retailers, customs offices or repair shops sometimes ask for proof of a CE, R-NZ or FCC-ID mark before accepting a return, import or warranty claim. That information sits inside a dedicated settings screen instead of the box or manual.
Set Up Access Point Names (APN) Manually
If mobile data won't connect or SMS and MMS refuse to send on your Oppo phone, a missing or incorrect access point is usually the cause. This happens after a SIM swap, a factory reset, or when the network profile never downloaded automatically. Entering the APN by hand fixes both data and messaging in one step.
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.
Connect to Wi-Fi via WPS
Typing a long Wi-Fi password on a small keyboard gets old fast, especially with random character strings. If your router supports WPS, your Oppo phone can skip that step entirely and pair using a physical button push instead. This only works while both devices are actively listening for the WPS handshake at the same time.
Turn Web Link Previews On or Off
When you paste a website link into a text, Messages sometimes shows a thumbnail with the page title and image, and sometimes just plain text. This depends on a setting inside the Messages app that decides whether previews load for every link or get skipped entirely. If previews suddenly stopped appearing or you want to disable them for privacy reasons, this option is the one to check.
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 Automatic MMS Download On or Off
MMS attachments on your Oppo phone often download the moment a message arrives, even over mobile data. On a metered plan that can add unexpected charges before you even open the message. The setting behind this behavior sits per SIM card, which is easy to miss on dual-SIM devices.
Manage Google Activity Controls
If you have not touched the Activity controls on your Oppo phone, Google keeps logging Web & App Activity, location history, YouTube history and more under the Google Account you are signed into. This tracking runs in the background and is not obvious from the main Settings screen. Left untouched, it builds a detailed profile of what you search, watch and where you go.
Turn On/Off Emergency SOS
If pressing the power button five times keeps launching Emergency SOS by accident, or the shortcut refuses to trigger when you actually need it, the Emergency call quick access toggle is probably set the wrong way. The feature works straight from the lock screen and dials your saved emergency contacts, so an unwanted trigger during everyday use can be just as annoying as a missing one in a real emergency.
Clear the Entire Call Log
If your Oppo call list keeps piling up with old numbers, missed calls, and duplicate entries, finding a recent call becomes harder every week. Since the Call history screen mixes calls and messages together, a full log can make it tricky to spot what actually matters. Clearing it out gives you a clean list again without touching your saved contacts.
Merge Duplicate Contacts
When the same person shows up twice in your Oppo contact list, calls land under one entry while texts go to the other, and you can never tell which number is still current. This usually happens after importing a SIM card, syncing a Google account that already held a copy, or restoring an old backup on top of existing contacts. ColorOS can spot matching names or numbers and combine them into a single record, but it only works if you point it at the right pair first.
Set Up a Privacy Password
If Oppo asks for a privacy password when you try to lock an app or open Private Safe, that code is separate from your screen lock. Many users type in their unlock PIN by mistake and get stuck at the confirmation screen. The privacy password can be its own pattern, PIN, or password.
Allow Messages During Do Not Disturb
When Do Not Disturb is active on your Oppo phone, every incoming message stays silent and hidden on the lock screen, even from people you actually want to hear from. Coloros lets you punch a hole in that silence for everyone, only saved contacts, or just your marked favorites. Without this exception set correctly, urgent texts from family or work contacts get buried until you manually check your notifications.
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 or Disable Personal Hotspot
If your Oppo phone won't share mobile data with other devices, the Personal hotspot function under Connection & sharing might be switched off or blocked by a data restriction. Connected phones, tablets, or laptops rely on this Wi-Fi hotspot to get online through your Oppo's data connection. A short auto-off timer or a disabled mobile data connection can also stop the hotspot from working as expected.