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2. Samsung Galaxy S21 - Wikipedia

   en.wikipedia.org/wiki/Samsung_Galaxy_S21

   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.

3. Samsung Galaxy S series - Wikipedia

   en.wikipedia.org/wiki/Samsung_Galaxy_S_series

   Samsung announced the Samsung Galaxy S21 series, consisting of the Samsung Galaxy S21, Samsung Galaxy S21+ and Samsung Galaxy S21 Ultra, on 14 January 2021. They are the first S Series Lineup to feature 5G models only during launch. On 4 January 2022, the Samsung Galaxy S21 FE was released, a mid-range variant of the S21 containing similar ...

4. MagSafe (wireless charger) - Wikipedia

   en.wikipedia.org/wiki/MagSafe_(wireless_charger)

   [35] [36] At launch, Belkin was the only accessory maker Apple had licensed the MagSafe charging standard to; while other third-party accessory makers advertise magnetic charging products as "MagSafe compatible," they use older Qi standards that deliver a maximum charging speed of 7.5 W, compared to first-generation MagSafe's 15 W, and lack ...

5. 4G - Wikipedia

   en.wikipedia.org/wiki/4G

   One of the key technologies for 4G and beyond is called Open Wireless Architecture (OWA), supporting multiple wireless air interfaces in an open architecture platform. SDR is one form of open wireless architecture (OWA). Since 4G is a collection of wireless standards, the final form of a 4G device will constitute various standards.

6. Wireless power transfer - Wikipedia

   en.wikipedia.org/wiki/Wireless_power_transfer

   Inductive charging pad for a smartphone as an example of near-field wireless transfer. When the phone is set on the pad, a coil in the pad creates a magnetic field [1] which induces a current in another coil, in the phone, charging its battery. Generic block diagram of a wireless power system

7. Quick Charge - Wikipedia

   en.wikipedia.org/wiki/Quick_Charge

   Qualcomm claims Quick Charge 3.0 is up to 4–6 °C cooler, 16% faster and 38% more efficient than Quick Charge 2.0, and that Quick Charge 3.0 with Dual Charge+ is up to 7–8 °C cooler, 27% faster and 45% more efficient than Quick Charge 2.0 with Dual Charge. [4] Quick Charge 4 was announced in December 2016 for the Snapdragon 835 and later ...

8. List of UWB-enabled mobile devices - Wikipedia

   en.wikipedia.org/wiki/List_of_UWB-enabled_mobile...

   HomePod (2nd generation) 2023 January Apple U1 [21] AirTag: iOS 14.5, iPadOS 14.5 or later: 2021 April Apple U1 [22] AirPods Pro 2: iOS 15.1, iPadOS 15.1 or later: 2022 September Case only Apple U1 AirPods Pro 2 (USB-C version) 2023 September Apple U1 Motorola: Moto Tag: 2024 August Google's Find My Device [23] Qorvo DW3210 Samsung: Galaxy SmartTag

9. Smartphone - Wikipedia

   en.wikipedia.org/wiki/Smartphone

   Wireless charging has been widely adapted, allowing for intermittent recharging without wearing down the charging port through frequent reconnection, with Qi being the most common standard, followed by Powermat. Due to the lower efficiency of wireless power transmission, charging rates are below that of wired charging, and more heat is produced ...