如何在iphone上以编程方式启动3g连接？
问题描述：
如何以编程方式在iphone上启动3g连接？
how to programatically start 3g connection on iphone?
我是否需要使用socket api？
do i need to use socket api?
答
你不需要。您只需从Internet访问所需的任何资源，手机将以合适的方式处理连接。如果你想知道是否存在连接，如果是，那么使用什么类型，有一个API和一个来自Apple的样本。另请参阅Apples iPhone网络访问：最佳实践。
You don't need to. You just access whatever resource you need from the Internet, and the phone will handle connecting in a suitable manner. If you want to know whether there is a connection at all, and if so what kind is being used, there is an API and a sample from Apple. Also see Apples iPhone Network Access: Best Practices.