For the Uniswap mobile wallet, users can send crypto to their friends just by selecting the recipient's phone numbers from their address book. They'd no longer need wallet addresses or web3 domain handles.  If both sender and recipient are registered with Ultimate Digits, the funds will deposit instantly into the connected wallets, else the recipient will get a request to join via an incentivized referral. They'd also then become users of Ultimate Digits and the Uniswap mobile wallet. 