New One UI 9 issue on Samsung phones
Some Galaxy users who received Samsung's Android 17-based One UI 9 update are experiencing a major issue with Android Auto.
Releasing software updates as fast as possible does not always mean delivering them seamlessly. The One UI 9 update quickly released by Samsung brought a new issue to Samsung phones.
Some Samsung Galaxy users who installed the new Android 17-based interface are turning to forums with complaints of severe stuttering in in-car systems and complete connection dropouts.
New issue in One UI 9 update
Samsung continues to gradually deliver the Android 17-based One UI 9 update to supported devices. With the wider rollout of the stable version, some Galaxy smartphone owners who installed the update started experiencing technical glitches on the Android Auto platform. The problems range from stuttering on the multimedia display to the system failing to connect at all.

Connection dropout complaints increase on forums
Reports on the issue have multiplied on Reddit, official Samsung community pages, and Google support forums since the distribution of the One UI 9 stable version. According to shared user experiences, the bug has not reached a mass scale affecting all devices, but occurs frequently enough to indicate a specific technical trend.
Common problems reported by affected users fall into two main categories:
- Experiencing severe frame drops and stuttering in the interface.
- Sudden or complete loss of data communication between the phone and the car display.
Cross-version testing points to a software-based issue
A user test reported by tech media outlet Android Authority strengthened the possibility that the problem stems directly from the One UI 9 software. In the test conducted, the Android Auto connection worked without issues on a Galaxy S25 Edge model running version One UI 8.5. Meanwhile, a Galaxy S24 Ultra model connected to the same car unit and running One UI 9 directly exhibited the stuttering and disconnection problems mentioned in the forums.

Neither Samsung nor Google has issued an official statement regarding the cause of the bug or the schedule for a fix update. However, the next update will likely resolve this issue. What problems are you experiencing on your phones? Let's meet in the comments.
This article was translated from Turkish. Read the original article in Turkish.