Phantom Wallet will stop supporting the Sui network on September 24, 2026, giving token holders less than five weeks to move their assets. The decision comes as Sui's decentralized finance total value locked has plunged 82% from its peak, with the wallet tying the move to capital flight off the Layer-1 chain.
The TVL slide
Sui's DeFi TVL has dropped 82% from its high, a steep erosion that has drained liquidity from the network. That capital flight is what Phantom Wallet says triggered the support cutoff. The wallet hasn't spelled out a specific reason beyond that, but the numbers are stark: three-quarters of the value once locked in Sui's protocols has left.
For a network that positioned itself as a high-throughput alternative to Ethereum, the decline is a hard reversal. The 82% figure isn't a quarterly wobble or a market blip — it's a near-total retreat from the chain's early DeFi rush.
What the cutoff means
Phantom Wallet is a popular multi-chain browser extension, and its decision to drop Sui removes one of the easiest gateways for everyday users to interact with the network. After September 24, wallets that hold SUI or Sui-based tokens will no longer be able to see or manage those assets through Phantom. The coins don't disappear — they just stop being accessible via that interface.
That's a problem for anyone who hasn't moved funds by then. A wallet that loses a network's integration doesn't let you use its dApps, sign transactions, or even check balances. For a token holder, that's effectively a lockout.
The deadline to act
Phantom's announcement gives holders a hard date: September 24, 2026. That's not a vague “later this year” warning — it's a specific cutoff. Anyone still holding SUI or Sui-based assets in Phantom has until then to either transfer to another wallet or move them to a different network.
So what's the actual next step? Go to the wallet's settings and find the “networks” or “assets” section. If you've got SUI listed, you'll want to export your private keys or use a wallet that still supports Sui — something like a native Sui wallet. The clock is running, and with less than five weeks left, waiting isn't a plan.
The decision isn't just a product update. It's a signal about how the Sui ecosystem is faring. When a major wallet like Phantom cuts a chain, it makes that chain less convenient to use, which can push more users to alternatives. That feedback loop isn't new, but it's hitting Sui at a moment when its TVL has already been cut by more than four-fifths.
It's not clear whether other wallets will follow Phantom's lead, or whether Sui can reverse the capital flight. What is clear is that the people still holding Sui tokens have a concrete, dated deadline. The next move is theirs.
