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ＧＳＭ ＭｏＵ永久文件ＴＧ．３１详细说明了支持第三代移动网络业务和性能的终端设备的要求。 物理设备 第三代终端必须是一个便于更换的设备。其设计的目标是通过第三代系统提供的服务使得移动通信成为用户生活的一部分。它集合了商业、信息（新闻）、银行服务、旅游和多媒体
GSM MoU permanent file TG. 31 details the requirements for end devices that support third-generation mobile network services and performance. The third generation of physical equipment terminal must be a replacement device. The goal of the design is to make mobile communications a part of the user’s life through the services provided by third generation systems. It brings together business, information (news), banking services, travel and multimedia