Samsung’s One UI 7 update has introduced a major inconvenience for users who rely on Dual Messenger to run two WhatsApp accounts. The feature simply doesn't work anymore — the second WhatsApp instance fails to open or fails to signup, leaving many dual-SIM users stranded.
While WhatsApp technically allows adding a second number within the same app, there's a persistent bug: if you enable app lock for the secondary account, the app crashes every time you try to unlock it. Users are forced into a frustrating loop — reopen WhatsApp, scan their finger, and repeat. It's practically unusable for anyone who values privacy and security.
That's why Dual Messenger was the go-to workaround — until One UI 7 broke that too. In desperation, some users (like me) have resorted to downgrading their OS, sacrificing all the improvements of One UI 7 just to restore reliable dual WhatsApp access.
Samsung needs to fix this — urgently. Until then, power users are stuck choosing between new features or essential functionality.
We request you kindly share the log file. Also, share the video clips and images for better understanding. This will help us to investigate further and resolve this issue.
To share the log file: Open Samsung Members Application > Support> Tap on send feedback> Choose Composer> Select error report> Select the appropriate issue category> Type your query and send.
Note: To ensure relevant log information is included in the error report, submit the report within 3 minutes of encountering the bug or error, and do not terminate (swipe away) the Samsung Members application until you are notified that the report has been sent. This can take up to 5 minutes.
