[Exclusive] Samsung Galaxy S21 Ultra key specs revealed: display, cameras, battery, and more
Samsung Galaxy S21 Ultra specifications will include a 6.8-inch Dynamic AMOLED 2X display, 5,000mAh battery, 108MP primary camera, 40MP selfie camera, and more.
Update (August 2025): Nearly five years since its debut, the Galaxy S21 Ultra is remembered as a landmark device in Samsung’s flagship journey. It introduced the Contour Cut camera design that continues to influence Galaxy phones today and marked the point where Samsung folded the Galaxy Note’s S Pen features into the S series. While newer models like the Galaxy S25 lineup have long since taken the spotlight, the S21 Ultra remains a popular phone. It can still be found in the second-hand market thanks to its solid 108MP camera system, long-lasting battery, and enduring software support that extended through Android 15.
Samsung Galaxy S21 series launch is tipped for January 2021 and the lineup is tipped to include the Galaxy S21, Galaxy S21+, and Galaxy S20 Ultra models. We have come across renders of the Galaxy S21 and S21 Ultra and the latter has also been spotted on Geekbench. Now, 91mobiles brings you key Galaxy S21 Ultra specifications courtesy of tipster Ishan Agarwal. The smartphone is codenamed internally as O3 and carries the model number SM-G998U. Based on what we have learned, the flagship’s specs will include a Dynamic AMOLED 2X display, a 5,000mAh battery, and more.
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Also read: Samsung Galaxy S21 Plus design leaked in CAD renders
Samsung Galaxy S21 Ultra specifications
According to Agarwal, the Samsung Galaxy S21 Ultra will feature a 6.8-inch Dynamic AMOLED 2X display and the device will run Android 11-based on One UI 3.0 out of the box. It will feature a 108MP primary rear camera and 40MP front-facing camera. The tipster also mentions the flagship will pack a 5,000mAh battery. This is all the info Agarwal could give us about the Galaxy S21 Ultra.
The flagship is expected to come with a high refresh rate screen (rumours suggest it could be 144Hz instead of 120Hz) although we cannot confirm this just yet. Recently leaked renders have already suggested the flagship will feature a design similar to the Galaxy S21 with a centred punch-hole cutout and a unique rear camera module that curves into the frame. In addition to this, the smartphone should employ the upcoming Snapdragon 875 chipset under the hood in markets like the US and China and Exynos 2100 SoC in markets like India. The phone will reportedly measure 165.1mm x 75.6mm x 8.9mm (10.8mm with the camera bump) and come in Black and Silver colours.
