With the new Blockstream Green mobile app, we addressed this challenge by providing a simple, safe user flow for beginners while educating them on the basics of self-custody, as well as an all-new flexible interface for advanced users who seek a higher degree of control and greater functionality, including singlesig, multisig with two-factor authentication (2FA), and hardware wallet integration, and soon with more options like payments on the Lightning Network and separate cold storage watch-only wallets.
https://blog.blockstream.com/the-newly-redesigned-blockstream-green-wallet-comes-to-mobile/