According to the latest rumor from Ice Universe, a source who is often accurate on these matters, trial versions of the phone have been produced by Samsung and they have flat screens.
Ice Universe confirmed they were referring to both the Samsung Galaxy S21 and Galaxy S21 Plus, so there may be a difference for the Galaxy S21 Ultra.
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I firmly believe that the S21 and S21 are flat screens. They have been trial-produced. If they are changed to curved screens now, the S21 series will be postponed at least until the end of February. This is impossible. https://t.co/4ZrPuTrUpgNovember 24, 2020
Ice Universe made it clear that the company may decide to switch to curved screens, but he believes that would cause a delay and that's something he believes is "impossible" for the company to do.
Current leaks suggest the Galaxy S21 will be coming early next year with a release date set for around the middle of January. That's surprisingly early as Samsung usually introduces its next generation of handsets in February.
We're currently expecting three variants of the Galaxy S20, with the Galaxy S20 rumored to have a 6.2-inch display, the Galaxy S21 Plus a 6.7-inch one, and the Galaxy S21 Ultra a 6.8-inch screen.
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James is Managing Editor for Android Police. Previously, he was Senior Phones Editor for TechRadar, and he has covered smartphones and the mobile space for the best part of a decade bringing you news on all the big announcements from top manufacturers making mobile phones and other portable gadgets. James is often testing out and reviewing the latest and greatest mobile phones, smartwatches, tablets, virtual reality headsets, fitness trackers and more. He once fell over.