Note 20 ultra UI lag after one UI 4

[Shiekh Rameez]

After updating my note 20 ultra to One UI 4 stable update a week ago my phone feels very laggy and slow.  I did factory reset multiple times and also at first i cleared the cache partition.  It still is much more laggy than before.   Android 11 was rock solid

[Dan_57]

Same issue with s20 fe.
Quite a lag while swiping down the quick panel when there are quite a few notifications

[pramodn85]

This is now a common issue for all Samsung devices after the recent OS upgrade. Worst experience of having a premium phone with laggy UI and sometimes the phone dialer takes around 20 to 30 seconds to show the sim options. Samsung must have done some proper testing before the rollout.

[Dan_57]

Yes bro, what annoys the most is that the problem is with an everyday day used app. Had it occurred with some other apps, would not have cared much

[lakshyagrover1997]

Bro thats the problem with stock android 12 too it will take time to get polishef😪😪

[saarang007]

There are no issues at all. No lags. I am getting smoother experience than Android 11. Exynos version (SM-N986B/DS)

Are you all performing Factory Reset the right way?

Check if this helps:

https://r2.community.samsung.com/t5/Tech-Talk/I-am-mentioning-this-again/td-p/10593850

If you use memory card, scan for errors / virus.
Power off phone, take out SIM card and re-insert, reboot phone, as network instability sometimes may cause lags.
Go to Mobile Network -> Network Operator and toggle the switch for Select Automatically.

- Clear cache for Google Play Services from App menu in Settings. Let it prompt for update / auto-update.

- Go to Play Store and Galaxy Store and update all the apps.

[cs-member13]

Dear Samsung Member,

Greetings from Samsung Customer Support!

We acknowledge your query and apologize for the same. Please visit this mentioned link to resolve your device issue: https://www.samsung.com/in/support/mobile-devices/why-is-my-phone-slowing-down-and-how-can-i-speed-i...

In case the issue still occurs. Please register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Ask questions).

Thank you for writing to Samsung.

Warm Regards,
Samsung Customer Support