Samsung Galaxy A12, A02s, A01, A11, A30, A31, and Tab S5e, Active 3 & A7 One UI 3 (Android 11) update scheduled for this quarter
Samsung has been pretty busy lately updating their extensive lineup of Android 11-eligible devices to the latest iteration of their custom Android skin – One UI 3 and One UI 3.1.
The OEM has definitely upped their update game and has now even crushed most of its competition not just in terms of the total update life cycle, but also with regards to the speediness.
For example, the budget-level Samsung Galaxy M21 recently bagged the One UI 3.1 update at a time when the likes of OnePlus and Xiaomi are still struggling to update some of their flagship devices.

Samsung Galaxy M21
While many of the Android 11-eligible Samsung devices are now running One UI 3 just fine, there are several devices that are still left. Their users are of course curious regarding the whereabouts of the next big update.
Android OEMs typically do not treat users to the luxury of precise update release dates but do give out vague ETAs from time to time.
And the same holds true for an official update list that has been made available recently. The list covers a bunch of devices like Samsung Galaxy M51, A02s, A01, A11, and A30. There are also several devices from the Tab series.
Galaxy M51: 15 March 2021 – 15 April 2021
Galaxy A80: 30 March 2021 – 30 April 2021
Galaxy A21s: 19 April 2021 – 19 May 2021
Galaxy A31: 20 April 2021 – 20 May 2021
Galaxy A71: 15 March 2021 – 15 April 2021
Galaxy Tab S5e: 20 April 2021 – 20 May 2021
Galaxy A12: 12 May 2021 – 12 June 2021
Galaxy A02s: 10 May 2021 – 10 June 2021
Galaxy A01: 5 May 2021 – 5 June 2021
Galaxy A11: 25 May 2021 – 25 June 2021
Galaxy A30: 26 May 2021 – 26 June 2021
Galaxy Tab Active 3: 8 May 2021 – 8 June 2021
Galaxy Tab A7: 18 May 2021 – 18 June 2021
Source
The list gives out a rough date for One UI 3 update releases for Q2 2021. Our guess is that the very initial rollout will kickstart on the first date given and will continue in phases till the end date.
Or it could be possible that the rollouts for a particular device will commence at any time within the time period given in the list.

Eye comfort shield on One UI 3.1
Nonetheless, the list has been picked from a Turkish Samsung portal and is hence Turkey-specific. Therefore, release dates may vary depending on your region. One can still get a rough idea though.
Moreover, some of the devices in the list may even get updated to One UI 3.1 directly thus effectively skipping the One UI 3 update. The recently released One UI 3.1 update for the Samsung Galaxy A80 testifies to this.
With that being said, be sure to keep an eye on our dedicated One UI 3.1 and One UI 3.0 update trackers so that you do not miss out on any new developments.
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