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2. Samsung Galaxy A21s - Wikipedia

   en.wikipedia.org/wiki/Samsung_Galaxy_A21s

   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 .

3. Electromagnetic shielding - Wikipedia

   en.wikipedia.org/wiki/Electromagnetic_shielding

   A laptop case with visible copper electromagnetic interference (EMI) coating shield on the inside. Such coatings are usually deposited by using electroless plating. It is applied both to home appliances and medical devices. [1] Typical materials used for electromagnetic shielding include thin layer of metal, sheet metal, metal screen, and metal ...

4. Form factor (mobile phones) - Wikipedia

   en.wikipedia.org/wiki/Form_factor_(mobile_phones)

   In the case of Yotaphone and Siam 7X, they have normal touchscreens on the front, but on the backside is an e-ink screen, which enables using the cases in a fashion similar to reading a book. The presence of the front camera for taking selfies has been an essential feature in smartphones, however, it is a difficulty to achieve a bezelless ...

5. Ferrite bead - Wikipedia

   en.wikipedia.org/wiki/Ferrite_bead

   The energy is either reflected back up the cable or dissipated as low-level heat. Only in extreme cases is the heat noticeable. A collection of snap-on/clamp-on ferrite beads. A ferrite bead can be added to an inductor to improve, in two ways, its ability to block unwanted high frequency noise. First, the ferrite concentrates the magnetic field ...

6. Wireless device radiation and health - Wikipedia

   en.wikipedia.org/wiki/Wireless_device_radiation...

   The antennas contained in mobile phones, including smartphones, emit radiofrequency (RF) radiation (non-ionizing "radio waves" such as microwaves); the parts of the head or body nearest to the antenna can absorb this energy and convert it to heat or to synchronised molecular vibrations (the term 'heat', properly applies only to disordered molecular motion).

7. 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.

8. Samsung GT-E1200 - Wikipedia

   en.wikipedia.org/wiki/Samsung_GT-E1200

   The Samsung E1200 (also known as Samsung Pusha and Samsung Keystone 2) is a mobile phone made by Samsung.This phone was released in Oct 17,2011 through Tesco in the UK. It was discontinued in 2015 when the Samsung Guru FM E1202 was released as its successor.

9. EMF - Wikipedia

   en.wikipedia.org/wiki/EMF

   EMF may refer to: Computing. Eclipse Modeling Framework, based on Eclipse software; Enhanced Metafile, a Microsoft Windows image file format;