Editing Smartphone (section)

===Back cover materials===
Back covers of smartphones are typically made of [[polycarbonate]], aluminium, or glass. Polycarbonate back covers may be glossy or matte, and possibly textured, like dotted on the [[Galaxy S5]] or leathered on the [[Galaxy Note 3]] and [[Note 4]].

While polycarbonate back covers may be perceived as less "premium" among [[fashion]]- and [[fad|trend]]-oriented users, its utilitarian strengths and technical benefits include durability and shock absorption, greater [[elasticity (physics)|elasticity]] against permanent bending like metal, inability to shatter like glass, which facilitates designing it removable; better manufacturing cost efficiency, and no blockage of radio signals or wireless power like metal.<ref>{{cite web |last1=Ho |first1=Joshua |title=A Discussion on Material Choices in Mobile |url=https://www.anandtech.com/show/7984/discussion-on-material-choices-in-mobile |website=www.anandtech.com |access-date=11 April 2021 |date=2014-05-05}}</ref><ref>{{cite web |title=Bring back plastic phones. |url=https://www.androidauthority.com/bring-back-plastic-phones-1004824/ |website=Android Authority |date=5 July 2019}}</ref><ref>{{cite web |title=Benefits And Applications Of Polycarbonates |url=https://www.tuflite.com/blog/benefits-applications-polycarbonates |website=Tuflite |date=17 June 2020 |access-date=April 11, 2021 |archive-date=April 11, 2021 |archive-url=https://web.archive.org/web/20210411235448/https://www.tuflite.com/blog/benefits-applications-polycarbonates |url-status=dead }}</ref><ref>{{cite web |title=Build materials: metal vs glass vs plastic |url=https://www.androidauthority.com/build-materials-metal-vs-glass-vs-plastic-617553/ |website=Android Authority |date=19 July 2018}}</ref>