Apple Watch独立联网的秘密:eSIM是个什么鬼?

手机数码 2017-09-27

本文来自:钨丝科技

Apple Watch是库克接手苹果后研发的新的产品线,但它对于iPhone的依赖非常大,在脱离iPhone后,很多功能都不能使用,就变成了一块只能显示时间的“智能手表”。

苹果发布Apple Watch Seires 3后,终于支持了LTE功能,让手表可以独立联网,里面最关键的技术就是eSIM卡。eSIM是陷入式的,它没有专门的sim卡槽,而且不需要换卡。

如果你从电信买了一张SIM卡后,想要转到联通,就需要购买新的SIM卡,而且办理的手续相当繁琐。而有了eSIM之后,用户无需换卡就能切换运营商的网络服务,也可以更方便地更换套餐。

在体积上,eSIM比传统SIM卡小了约90%,可以节省设备内部空间,也能减少设备开孔,提供更好的防水性能。它更加安全,不存在手机丢手后,卡被人拔去用的隐患。

也正因如此,新的Apple Watch可以摆脱蓝牙WiFi的束缚,成为一款能独立运行的可穿戴设备。

Apple Watch不是第一个使用这个技术的设备,早在2014年,苹果就发布了带LTE版本的iPad Air和iPad Mini。往返于英美两国的用户可以随意切换,不需要购买当地的SIM卡或手机。

但是eSIM受到了运营商的抵制,因为这对运营商本身的业务产生了威胁,会导致用户分流,但鉴于这是大的趋势,运营商们也在慢慢尝试改变,比如国内对于新Apple Watch的支持。但这就是智能手表这种小众设备,对于每个人都拥有的手机,想要实现改变还要很长时间。

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