Phantom’s plan to drop Sui exposes the hidden power wallet interfaces hold over user funds

Phantom will remove Sui from its wallet interface on Sept. 24, one month after announcing that it and Sui had decided to end the integration. After the transition, Phantom will no longer display Sui balances, support Sui sends or swaps, or connect to decentralized applications.The assets will remain on the Sui blockchain, tied to the credentials that authorize the account. Phantom's transition guide says users can restore access through a compatible wallet even after the cutoff. Sept. 24 ends access through Phantom; it does not end ownership or later access to the funds.That separation turns a product sunset into a test of power in a self-custodial market. A wallet provider cannot erase a user's coins, but it can withdraw the screen, transaction tools and app connections through which people use a chain.What Phantom is removing and what remainsSui support went live in Phantom on Jan. 29, 2025. At launch, the Sui Foundation said Phantom users could send, receive and manage Sui assets, swap SUI and connect to applications including Suilend, Navi, Aftermath and Bluefin.Those functions made Phantom a distribution surface for Sui as well as a place to display balances. The interface bro...