The biggest flex of Coinbase wallet is that it does proper management of security keys and operates storage of the assets of the users in their own devices. It should not be considered to be a centralized exchange but the point to be noted is that it does operate the transactions of such exchanges.
https://sites.google.com/coinswallett.com/coinbasewallet/home
https://sites.google.com/coinswallett.com/coinbasewallet/coinbase-login
https://sites.google.com/coinswallett.com/coinbasewallet/coinbase-app