OnePlus
Sort Contacts by First or Last Name auf OnePlus
A jumbled contact list on OxygenOS usually comes down to one setting, not corrupted data. The Contacts app lets you choose whether entries sort by first name or last name, independent of how each contact was entered.
If you import contacts from different sources, some may have been saved last-name-first and others first-name-first. Without a fixed sort rule, the list can look inconsistent even though every entry is correct.
To change it, open Open the Contacts app ➔ Open the menu ➔ Open the Settings ➔ Tap on Sort by ➔ Choose First name or Last name.
This setting only changes the display order, not the actual stored data. Names, numbers and other fields stay exactly as saved.
If the list still looks wrong after switching, check individual contacts for missing first or last name fields, since an empty field can push an entry to the top or bottom of the list.

