What is the downside of Coinbase Wallet?

Other key drawbacks include: Total Responsibility【 1-(855)(288)(0231) 】 – Lose your 12-word recovery phrase, and your funds are gone forever. Even Coinbase can't help. Extra Fees【 1-(855)(288)(0231) 】 – Every transfer has gas fees, plus a 1% charge on in-app swaps.