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The lineup of the first three devices was unveiled at Samsung's Galaxy Unpacked event on 14 January 2021. The three devices served as the successors of the 2020 models. All devices' design scheme has changed drastically, redesigning the massive rear-camera module for a slimmer camera module incorporated with the buttons and a uniform appearance for the S21, S21+, and S21 Ultra.
The S Pen has latency at 2.8ms, reduced from 26ms on Note 20 and 9ms on the Note 20 Ultra and S21 Ultra (although the S21 Ultra had S Pen functionality, it was not included with the phone), and marked the introduction of an 'AI-based co-ordination prediction system'. The S Pen also supports Air gestures and the Air Action system.
Like other Galaxy phones, the lock screen can be customized with widgets and shortcuts. Seven customizable home screens are available. Eleven quick settings buttons in the notification drawer toggle various device features. These include Wi-Fi connectivity, Sound Mode, Ultra Power Saving, and Power Saving.
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The Galaxy S22 Ultra had a huge design change which gave it a more similar look to the Galaxy Note20 Ultra rather than the Galaxy S21 Ultra. The S22 Ultra saw the introduction of the built in S Pen which was not present on the Galaxy S21 Ultra. The S22 Ultra also changed the adaptiveness of the refresh rate from 10–120 Hz to 1–120 Hz.
Intel Display Power Saving Technology or Intel DPST is an Intel backlight control technology. Intel claims that display take up most power in mobile devices and reducing backlight linearly affects energy footprint. Intel DPST technology aims to adaptively reduce backlight brightness while maintaining satisfactory visual performance.
The S20, S20 FE, S20+, & S20 Ultra contain non-removable 4000 mAh, 4500 mAh, 4500 mAh, and 5000 mAh Li-Po batteries respectively, and Qi inductive charging is supported at up to 15 W as well as the ability to charge other Qi-compatible devices from the S20's own battery power, which is branded as “Samsung PowerShare”. Wired charging is ...
Samsung claims that with Ultra Power Saving on, an S5 with 10% charge remaining can last for an additional 24 hours in standby mode. [ 26 ] [ 35 ] [ 36 ] [ 37 ] Another improvement in power efficiency comes from the use of Qualcomm's envelope tracker , which reduces the power used in connectivity.