Manual Library
instructions、specification instruction manual user guide maintenance manual
查看详情 访问资源
GSMArena.com - mobile phone reviews, news, specifications and more...
GSM mobile phone Nokia Sony Apple iPhone Motorola Alcatel Xiaomi Samsung Oppo Oneplus cellphone specifications information info opinion review pictures photos
查看详情 访问资源
ETSI - Welcome to the World of Standards!
ICT standards standardisation standardization radio standards broadcast standards network standards mobile standards European Standards Specifications EN TS TR ES EG ISG GS ETS
查看详情 访问资源
Screen Sizes | Viewport Sizes and Pixel Densities for Popular Devices
screensizes screen sizes screen specifications screen specs smartphone tablet monitor resolution pixel density PPI popularity device
查看详情 访问资源