Samsung Galaxy Phones Lose Wi-Fi and SIM Access After One UI 9 Update

3 articles · Updated · TechRepublic · Nov 6

Galaxy owners report One UI 9 is knocking out Wi-Fi, mobile data or SIM functions, with complaints spanning S-series, Z Fold and A-series phones.
User reports describe dropped Wi-Fi, apps failing over cellular and SIM Manager becoming inaccessible; the number of affected devices remains unknown.
Samsung has not identified a common cause or issued a permanent fix, leaving open whether the failures stem from software, network settings or individual hardware.
Temporary workarounds such as restarting, toggling Airplane mode or resetting network settings have helped some users, while factory resets have still failed in some cases.
One UI 9 has been rolling out in phases since September 16, so more Galaxy owners may face uncertainty until Samsung confirms the issue and releases a targeted fix.