The old fixed-line telephone has been replaced by mobile phones, Short Message Service (SMS), e-mail and instant messaging (IM).

老式的固定电话早已被手机、短信息、电子邮件和即使消息（IM）所取代。

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In fact, there is an SMS (Short Messaging Service) service that will automatically send you alerts on your cell phone.

FORBES: Magazine Article

When I first heard about Shenzhen-based Tencent during the early 2000s from ICQ managers, Tencent was working with China Mobile to allow PC users to send short messages from PCs to phones, and then via SMS (mobile Short Messaging Service) back again.

FORBES: Tencent Goes Global

Using the Short Messaging Service (SMS) functions on mobiles, people with hearing difficulties can communicate by typing messages into their phones.

BBC: Deaf go mobile phone crazy