Phantom Wallet will discontinue support for the Sui blockchain on September 24, 2026, ending an integration that brought Sui into one of crypto’s most widely used multichain wallets.

Phantom said the decision was made mutually with Sui, while both sides are leaving open the possibility of working together again in other areas. The important message for users is that this is a wallet integration shutdown, not a blockchain shutdown, security breach or loss-of-funds event.

Phantom and Sui End Their Wallet Integration

Phantom announced that support for Sui will officially end on September 24, giving users roughly a month to prepare for the transition. According to Phantom’s announcement, the two projects jointly decided to end the integration while keeping the door open to exploring different collaborations in the future.

The change closes a relatively short chapter in Phantom’s multichain expansion. Sui support had allowed users to manage SUI and other Sui-based assets from the same interface they used for networks such as Solana, Ethereum, Polygon, Base and Bitcoin.

Phantom’s own support documentation currently describes it as a multichain wallet with support for several networks, including Sui. Users can hold, send, receive, buy and swap Sui-based tokens directly through the application.

The decision therefore removes an entire blockchain integration rather than simply discontinuing an individual token or application. There is no indication that the move was caused by lost user assets, compromised private keys or a vulnerability affecting Sui itself.

EtherWorld recently covered the Trust Wallet browser extension incident, where a compromised extension version resulted in millions of dollars in losses. It has also tracked incidents involving SafePal customer data and a Trezor shipping partner breach.

Phantom’s Sui decision is fundamentally different. It is a planned discontinuation of network support. For Sui, the announcement also arrives during an active period of ecosystem development.

Earlier this year, Sui introduced Confidential Transfers aimed at improving privacy for institutional-grade applications. The blockchain has continued developing new functionality despite experiencing a significant six-hour network outage in May.

The Phantom decision therefore does not necessarily signal a slowdown in Sui development. Instead, it highlights how wallet providers can independently reassess which ecosystems they want to support.

What Sui Users Need to Do Before September 24

A self-custodial wallet primarily provides the keys and interface needed to interact with those assets. Phantom describes a wallet as being derived from a Secret Recovery Phrase, with individual accounts containing addresses across supported blockchain networks.

As a result, ending Sui support does not automatically move or destroy users’ SUI.

Phantom has outlined two broad options.

1. Users can move to another wallet that supports the Sui blockchain, including Sui-focused wallet applications. Depending on the migration method supported, users may either transfer their assets to a new address or access the existing wallet through compatible credentials. Users should follow Phantom and Sui’s official migration instructions rather than entering recovery phrases into unfamiliar websites or applications.
2. The second option is to swap Sui assets into another asset that Phantom will continue supporting.

Phantom said it will waive its own swap fees for affected users until the September 24 deadline, although users should still carefully review network costs, prices and transaction details before approving a transaction.

Whenever a wallet announces a migration, upgrade or shutdown, fake support accounts and phishing websites often appear around users who are already expecting to take action.

EtherWorld recently examined how a user lost more than $100,000 through address poisoning without the underlying wallet being hacked. A separate investigation involving an alleged $5 million crypto scam network showed how attackers can impersonate wallet and exchange support teams to convince users to surrender control of their assets.

Users should never send their recovery phrase to someone claiming to represent Phantom or Sui. Phantom itself repeatedly warns in its support documentation that its support team will never ask users for their Secret Recovery Phrase.

As EtherWorld explored in Can Crypto Fix Its Biggest Security Problem: Humans?, many modern crypto losses no longer require attackers to break blockchain cryptography. Social engineering can be enough when users are persuaded to sign, send or reveal something they should not.

Phantom and Sui have decided to end Sui support on Phantom on September 24, and leave open the opportunity to explore other collaborations in the future.

Your funds remain safe and fully under your control. Before 9/24, you can move your wallet to another app that supports Sui,…

— Phantom (@phantom) August 24, 2026

Why This Matters for Phantom’s Multichain Strategy

Phantom began primarily as a Solana wallet but has steadily expanded beyond a single-chain identity. Its current platform supports assets across networks including Solana, Ethereum, Base, Polygon, Bitcoin, Monad, HyperEVM and, until September, Sui.

However, every additional blockchain brings engineering and maintenance requirements. Wallet providers must maintain transaction formats, RPC infrastructure, token discovery, swaps, dApp connectivity, security protections and user support for every ecosystem they integrate.

Removing Sui shows that multichain expansion is not necessarily permanent. Wallet providers can add networks, reassess integrations and eventually remove them when strategic or technical priorities change.

The development also exposes one of the trade-offs of relying heavily on a single multichain interface. A blockchain can remain operational while a particular wallet chooses to stop supporting it.

What the Split Means for Sui and Wallet Users

The immediate impact will fall on Sui users who made Phantom their primary interface for interacting with the network. They now have until September 24 to prepare.

For Phantom, removing Sui reduces the number of ecosystems it must directly maintain while leaving its larger multichain strategy intact. For Sui, the challenge is making sure affected users can transition smoothly into other wallets without creating unnecessary friction.

Sui itself remains an active Layer-1 ecosystem. Its recent Confidential Transfers rollout shows that development continues around privacy and institutional use cases, while the May outage demonstrated that network resilience remains another important area for the ecosystem to address.

Recent incidents involving Trust Wallet, SafePal and Trezor have shown that wallets still depend on software, distribution systems and external service providers. But portability remains one of self-custody’s most important advantages.

Phantom and Sui’s separation therefore looks less like an emergency and more like a reminder of how the multichain wallet market works. Most importantly, users should treat unsolicited migration links, support messages and requests for recovery phrases as potential scams.

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Related Articles

1. Sui Launches Confidential Transfers for Institutional-Grade Privacy
2. Sui Blockchain Restores Operations After Six-Hour Network Outage
3. Trust Wallet Browser Extension Security Incident
4. SafePal Data Breach Exposes 40K Customer Records
5. Trezor ShipMonk Data Breach Exposes Customer Data

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