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Samsung Galaxy A21s is a mid-range Android smartphone designed, developed, marketed, and manufactured by Samsung Electronics as part of its Galaxy A series. The A21s line consists of SM-A217F , SM-A217F/DS , SM-A217F/DSN , SM-A217M and SM-A217M/DS .
The Samsung Galaxy A20s is compatible with 2G, 3G, and 4G networks. It supports Wi-Fi, Wi-Fi Direct, Bluetooth, and Mobile Tethering.It also supports a download speed of up to 150 megabits per second and an upload speed of up to 50 megabits per second when connected to a Long Term Evolution (LTE) network.
The Samsung Galaxy A series is a line of low-range to mid-range Android smartphones and tablets manufactured by Samsung Electronics as part of their Galaxy line. The first models in the series were the first-generation Galaxy A3 and Galaxy A5 , announced on October 31, 2014 and released in December 2014.
Qi (/ tʃ iː / CHEE) is an open standard for inductive charging developed by the Wireless Power Consortium.It allows compatible devices, such as smartphones, to receive power when placed on a Qi charger, which can be effective over distances up to 4 cm (1.6 in). [1]
Samsung Galaxy M21 is a mid-range Android smartphone developed by Samsung Electronics as a part of Galaxy M series smartphone lineup for 2020. It was first released on March 18, 2020 as the successor to the Galaxy M20 and Galaxy M30s .
The proliferation of portable wireless communication devices such as mobile phones, tablet, and laptop computers in recent decades is currently driving the development of mid-range wireless powering and charging technology to eliminate the need for these devices to be tethered to wall plugs during charging. [172]
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