The Latest One UI 9 Update Is Causing Major Wi-Fi Issues For Some Samsung Users

Samsung's much-awaited One UI 9 update, which brings Android 17 to the company's various smartphones, has become a headache for some Galaxy phone owners. The new software, which debuted on the company's newest foldables, started rolling out to different devices in September. Although One UI 9 brings several new features, including upgrades to Galaxy AI, it is causing Wi-Fi connectivity issues, according to an Android Authority report. These problems aren't limited to a particular phone and seem spread across devices. More importantly, this isn't the first issue associated with the One UI 9.0 update. Samsung Galaxy users had earlier reported a huge increase in battery drain after applying the update.

The latest bug report is more severe as it impacts Wi-Fi connectivity, and without data connectivity, you can't use a ton of apps and features on your Galaxy smartphone. Moreover, the problem isn't seemingly limited to Wi-Fi; some users are also encountering cellular connectivity failures. Samsung hasn't officially said anything on the matter at the time of writing.

Multiple Galaxy phone owners are reporting Wi-Fi and cellular connectivity issues after updating to One UI 9 on the company's official Community website and Reddit. One Galaxy S24 owner complained that their phone connects to Wi-Fi for a moment before disconnecting, and then prompts "connection failure" with every attempt. A Galaxy Z Flip 7 user also reported Wi-Fi connectivity problems in a Reddit post but noted that disabling Wi-Fi 7 mode in the Wi-Fi developer options (part of Connectivity Labs) fixes the problem. However, the fix doesn't seem to be working for everyone. The same issue has been reported by Galaxy Z Fold 8, Galaxy S24+, Galaxy A55, and Galaxy S25 Ultra owners.

Besides Wi-Fi, as mentioned, some Galaxy owners are reportedly dealing with cellular connectivity issues. One Galaxy S24 user noted on the Samsung Community website that while Wi-Fi is fine on their phone, mobile data wasn't working. Folks with the Galaxy S26 Ultra, Galaxy S25, Galaxy A16, and Galaxy A17 replied saying they were also dealing with the same issue. No single fix seems to be available, and if you're facing the same issues, you might have to wait for Samsung to roll out an update that resolves these problems. However, there is no word on when that might happen.