As with conventional currency, you don’t need a wallet to spend your cash, but it certainly helps to keep it all in one place.
Also, it comes with a built-in browser for all the applications running on Ethereum, which allows you to interact with Dapps on your phone whenever and wherever you want.
Depending on the specific L2 technology and implementation, it may offer from 50x to over 1000x more throughput than L1.
Buterin took the opportunity while speaking at the opening keynote of CoinDesk’s invest: ethereum economy virtual conference, to reiterate his enthusiasm for so-called layer 2 scaling solutions such as “rollups,” which essentially means keeping transaction data on-chain while pushing the computational load off the chain.