Reject a Call with a Quick Response Text
When you cannot pick up but do not want to ignore the caller completely, a plain decline leaves them guessing. On Oppo phones the Reply option lets you send a short text instead of just hanging up. The tricky part is finding where the quick responses live and how to edit them before the call ends.
Create a Contact Group
Oppo's Contacts app only offers a few predefined groups like Family or Friends, and none of them match a specific team, class, or project chat. If you want to call or message the same set of people at once, you need to build that list yourself instead of relying on the default categories.
Sort Contacts by First or Last Name
When some contacts show their first name up front and others their last name, scrolling through your contact list turns into guesswork. This mismatch usually comes from the sorting order set in the Contacts app, not from how each entry was saved. Calls, Messages, and the dialer all follow that same sorting rule.
Manage Displayed Calendar Accounts
If your Oppo calendar mixes personal, work, and synced events from multiple accounts, finding the right appointment gets messy fast. Coloros lets you hide entire accounts or single categories from the calendar view without deleting any data. The setting sits inside the calendar app itself, not in the general account settings.