No. OTA updates are non-destructive. Your photos, apps, contacts, and settings remain intact.
(Reasonable defaults assumed for typical Oppo/ColorOS/realme settings.) oppo cph1933 ota update
Before manually searching forums, always check the official channel first: The phone will reboot, apply update, then restart
"This update improves system stability and fixes an issue where the screen would occasionally flicker during notification pull-down. Optimizes fingerprint unlock accuracy. Integrates the July 2024 Google Security Patch." Before manually searching forums, always check the official