No more Android updates for S7 Series as you already got 2 Major Android OS updates... Software support for S7 Series has ended by Samsung Kindly accept this as solution if you find this information useful🙂
In future make sure that you mention the full name of your Galaxy device for which you're posting the thread 😐 As for the One UI 4 update, you can check in the notices section on the Members app 🙂
