Yes Coinos.io works great for android, on mine (Galaxy A15) it installs a web browser app (not a playstore app). It associates with your nostr account if you import your nsec (followers and followed + npub addresses of these users) and allows you to NWC with nsec.app for direct Zaps from Primal (not Amethyst). It allows you to choose your national currency, has a PIN to unlock balance or transactions and has 2FA with Google Authenticator. I also like the fact that there's an inbuilt map which allows you to locate bitcoin vendors, I believe this will be useful for Plebs in the future. If for some reason you open Coinos and it fails to load remember to first access your nsec.app and then opening Coinos, I find this feature useful, because it's like a manual extra layer of security to access your wallet.