The first three digits tell you which mobile phone service provider you are using.

前三位数字表示您使用的是哪家移动电话服务供应商。

youdao

At each college, the students who choose to get an iPhone must pay for mobile phone service.

在每一所大学，选择购买 iPhone 的学生必须支付手机服务费。

youdao

The major drawback with the iPhone is the phone service.

iPhone最大的缺点就是它的通话服务。

youdao

Skype is an Internet video and phone service that was just in the news.

VOA: special.2009.09.14

Hours ahead of Saturday's offensive, Pakistani authorities imposed a curfew and turned off mobile phone service in some areas.

VOA: standard.2009.10.17

The Saudi government told the country's three mobile phone operators to stop BlackBerry service for businesses and individuals this Friday.

VOA: special.2010.08.06

O'Brien's Jamaica-headquartered company, Digicel Group, began offering cheap cell phone service recently in this Pacific hellhole.

FORBES: Babble Rouser

Since February 2012, over 250, 000 Canadians have signed up for Fongo's free mobile phone service.

ENGADGET: Fongo makes a very public bid for control of Wind Mobile

Later the Bahamian government built a 200-foot telecommunications tower to bring phone service to the island.

FORBES: Blackbeard's Beach