To clean a virus from a phone, the general approach includes these steps:

1. Run an antivirus scan using a trusted app like Kaspersky, Avast, Norton, or AVG to detect and remove malware or viruses.
2. Uninstall any suspicious or unfamiliar apps manually, especially those with strange permissions or downloaded from unofficial sources.
3. Clear your browser cache and downloads to remove any potentially harmful files.
4. Restart the phone in Safe Mode to prevent third-party apps from running and then uninstall malicious apps.
5. If the malware persists, back up important data and perform a factory reset to wipe all apps and files.

Additional tips include keeping Google Play Protect enabled and updating your Android system and apps regularly to avoid virus infections.