Dedicated and shared lines
A dedicated line is used only by you. You decide when its IP changes and nobody else's traffic goes through it. A shared line is used by several customers at the same time, which is why it costs much less.
How the IP changes
Mobile carriers hand out addresses dynamically, so a mobile proxy's IP changes over time. Depending on the plan, it changes on demand, when you open the change-IP link shown under My proxies, or automatically every 5 or 30 minutes. The options for each country are listed in the table.
Connecting
You receive an address, login and password with separate HTTP/HTTPS and SOCKS5 ports. Dedicated lines with on-demand rotation also get a change-IP link. See the setup guide for configuration examples.