Set Default Account for New Contacts
Every time you add a new contact on your Oppo phone, ColorOS asks you to pick a storage account, and that gets annoying fast if you always choose the same one. Switching between your Google account and internal phone storage manually wastes time and can leave contacts scattered across different places. Setting a fixed default account for new contacts removes that extra tap for good.
Add a Birthday to a Contact
Saving a contact's birthday on an Oppo phone looks like a small task, but many users expect ColorOS to send a reminder afterward. That does not happen automatically, and the date only sits inside the contact card until you check it yourself. Knowing where the birthday field actually lives saves you from digging through the wrong menus.
Send an MMS Message
If you attach a photo, video, or contact card to a text message on your Oppo phone, it stops being a plain SMS. The Messages app quietly converts it into an MMS, which can change how it sends, how big it can be, and whether your carrier bills it differently. Not realizing this switch happened is usually why an attachment seems stuck or never arrives.
Mark a Contact as Favorite
Scrolling through a long contact list every time you need to reach the same few people gets tedious fast on an Oppo phone. Marking a contact as a favorite pins them to a quicker spot in Phone and Contacts, and favorites can also double as a group exception for Do Not Disturb or a whitelist against call blocking.
Send an SMS Text Message
If your Oppo phone defaults to a chat app and you can't find a plain SMS option, the native Messages app is often overlooked once internet messengers take over daily chats. This leaves some users unsure where to start a new text conversation or how to reach a contact who does not use a messaging app. A quick look at the Messages app clears up where the SMS function actually lives on Coloros.
Set an Alternate Calendar for Dates
Dates in the Calendar app only show up in the Gregorian format, even though you need a Chinese, Hebrew, or Hijri reference for religious or cultural events. This happens because the alternate calendar option is turned off by default and depends on Google Calendar being installed. Without it, Coloros only displays the classic calendar view.
Change Start of Week in Calendar
If your Oppo calendar always opens on the wrong weekday, the region-based Start of the week setting is usually the cause. This throws off the weekly grid in the Calendar app, which gets confusing if you are used to a different day as the first one. You can pick Saturday, Sunday or Monday to match your own routine.
Import Contacts from a vCard File
Switching to an Oppo phone often means your old contacts sit in a vCard file or on another device, and there is no simple sync button for that. Coloros only lets you import a full .vcf file or pull contacts directly from another phone via Bluetooth, without any option to pick single entries from the list. If you only need a handful of numbers, you end up with everything from the source file instead.
Add a Contact Photo
If your contact list on Oppo still shows plain initials instead of faces, calls and messages are harder to scan at a glance. This happens because no image has been linked to that contact yet in the Contacts app. Adding a photo works with an existing gallery picture or a new snapshot from the camera.
Forward a Message on Oppo
Retyping a text just to send it to someone else wastes time, especially when the message contains links or details you cannot easily reproduce. Oppo phones let you forward an SMS straight from the conversation, and you can also send it to a different app instead of another contact.
Edit Quick Decline Messages
When you reject an incoming call with a quick text, Oppo phones send one of four preset replies like 'Sorry, I can't answer the phone now.' These default lines rarely match how you'd actually respond to family, friends, or coworkers. Coloros lets you rewrite all four texts, but the setting sits inside the phone app rather than Messages.
Turn Chat Features On or Off in Messages
If your Oppo phone still sends plain SMS instead of read receipts, typing indicators or media previews in Messages, Chat features are probably switched off. Some carriers activate this RCS-based mode automatically, others leave it for you to enable manually. Turning it off again can also fix message delivery problems on certain networks.
Create an Event in Calendar
The Calendar app on Oppo smartphones lets you create events, but also goals, reminders, and tasks from the same menu. Each entry type asks for different fields, so picking the wrong one can mean missing a location box, a due date, or a reminder toggle later.
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.
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.
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.
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.
Change Contacts Name Format (First/Last Name Order)
If your contacts list shows first name before last name and you need it reversed, the sort order comes from a setting inside the Contacts app, not your phone's system settings. This affects how names appear in calls, messages, and the contacts list alike.
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.
Make a Phone Call
Switching between the Phone app and Contacts can be confusing when you just want to dial a number fast on your Oppo device. New users often do not realize there are several ways to start a call, and dual-SIM devices add an extra step that trips people up. This guide walks through the fastest route to get a call connected.
SMS Delivery Reports: Turn On or Off
If you can never tell whether a text actually reached the other person, your Oppo phone probably has delivery confirmations switched off. The feature that sends you a status update once an SMS lands on the recipient's device sits inside the Messages app and is disabled out of the box. On dual SIM phones it also behaves differently depending on which SIM sent the text.
Copy Text From an SMS Message
Copying text from a text message on Oppo often fails because a short tap only opens the reply field or the keyboard instead of a selection menu. This makes it hard to grab a confirmation code, tracking number, or address to paste into another app.
Change Calendar View
If your Oppo calendar always opens in the wrong layout, showing a full month grid when you just need today's schedule, the app is likely stuck on Month view. Coloros supports Schedule, Day, 3 days, Week and Month layouts, but the switch sits inside the app menu instead of the system settings, so it's easy to overlook.