No drawbacks. Banking apps, WhatsApp, Facebook, all the funny stuff still works if you need it but it's now sandboxed. GrapheneOS is built on Android 13 and you get regular security updates OTA.
Discussion
Thank you, I will check it out. Zap incoming
Thank you 🙏 You find all you need here:
My family uses it for around two years, even before sandboxed playstore was available and still great majority of apps worked with Aurora Store and F-Droid. No brainer. Good for her :)