I've been a loyal Samsung user for over 8 years and recently purchased the Galaxy M35. After updating to One UI 7.0 via the official OTA update (not beta), I immediately noticed several performance issues that were not present in One UI 6.0.
1. Slowness and Lag: The overall UI became sluggish. Multitasking caused noticeable frame drops and system lag. For example, while listening to music and booking a ride on Rapido, the music would pause and the device would stutter.
2. 120Hz Display Feels Like 60Hz or Lower: Even with 120Hz enabled, the screen animations felt choppy and inconsistent — as if it was stuck at a lower refresh rate. This made the experience unpleasant and laggy.
3. Sound Quality Degraded: After the update, I noticed a clear drop in audio quality. It felt less crisp and more muffled, which suggests possible sound driver or firmware issues in this version.
4. YouTube PIP Lag: The Picture-in-Picture feature, especially with YouTube, became unstable — it lagged and sometimes even froze.
At the time of updating, my storage was about 70% full. However, after downgrading back to One UI 6.0 (binary U4) with a clean installation, all of these problems disappeared. The phone now runs smooth, sound quality is back to normal, the display feels fluid, and no background lag occurs.
I’m confused why this happened on an official stable release. Is there any known issue or ongoing optimization for M35 users? Can Samsung share any information about an upcoming fix or One UI 7.1 patch to address this?
Thank you for your continued innovation — hoping this feedback helps and that a performance patch is released soon.
Kindly complaint to Samsung customer support through Samsung Members App as error report also send log files Along with this error report for this issue and wait for next update may be fix it by Samsung team soon. If you like please accept as a solution it's help to others users also, click on 3dots in my reply section and click on accept solution. Thanks.
There is odin application you will require laptop you need to download official one ui 6 firmware and flash it into download mode ... search on youtube how to falsh update via odin i will not recommend you to do it by yourself you might end up damaging your phone
As you are facing multiple issues with your device, we kindly ask you to share the log file with us. Additionally, if you have any video clips or images that illustrate the problem, it would greatly enhance our understanding.
Path: Samsung Members Application (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.
