Restart the phone regularly
Update ColorOS and system apps
Free up storage space
Uninstall unused apps
Clear app cache
Disable or reduce animations in Developer options
Turn on Performance mode if available
Close background apps
Limit auto-start apps
Keep at least 15–20% storage free
Use lightweight apps
Reduce widgets and live wallpapers
Scan for malware
Reset app preferences
Back up data and perform a factory reset if needed
Replace the battery if it is old or weak