iOS Phantom Deeplink signMessage fails for non-active account

[mooshee]

Summary

Our iOS dapp supports connecting multiple accounts. When the user has one account, connect and signMessage work great. However, if the user switches the active account in Phantom, all subsequent deeplink attempts fail with -32603 Internal Error.

Since session data has the public key (wallet address) embedded in every request, I would expect that Phantom would auto-switch accounts, prompt the user to switch accounts, or at the very least return a meaningful error.

Example

No response

Steps to Reproduce

1. Use deeplink to connect to the Phantom account-1
2. In Phantom, switch to account-2
3. Use deeplink to signMessage for account-1
4. Receive error response /signMessage?errorCode=-32603&errorMessage=Unexpected+error which according to the docs is an Internal Error

Phantom Version

25.8.0

Is there an existing discussion for this?

• I have searched the existing discussions

[adamdelphantom]

Hey @mooshee,

Unfortunately this is expected behavior. We don't currently have functionality to trigger an account switch prompt via deeplink.