https://www.theverge.com/2019/2/25/18233131/samsung-galaxy-s10-bitcoin-cryptocurrency-wallet-features

Samsung is one of the first major smartphone makers to include a cryptocurrency wallet in its latest flagship Galaxy S10 phones. The wallet lets users store bitcoin, Ethereum, and a beauty-related cryptocurrency called Cosmo Coin. It's a cold storage wallet, meaning it's not connected to the internet.

The Galaxy S10 phones also support select decentralized apps (“Dapps”). Currently, Samsung’s main Dapp that’s available is called Cosmee, and it lets users earn Cosmo tokens in exchange for leaving beauty reviews in the app. Cosmochain, the South Korean blockchain startup behind Cosmee, describes its app to The Verge as a blockchain-powered beauty review app — the blockchain is supposed to be a useful way to record all the reviews reliably.