In general, a cell phone connects to the Internet with the same wireless signal used to make a phone call. Your phone connects to a cell tower in the area, which then connects you to the Internet. Because transferring data between mobile devices and the Internet can get expensive, service providers charge for data plans.
Certain devices, like mobile devices running Android, can also connect to the Internet through Wi-Fi. Wi-Fi lets you connect your phone, tablet or laptop computer to the Internet wirelessly and without the need for a cellular signal or data plan. Generally, Internet connectivity on your mobile phone is faster through Wi-Fi networks, but you have to be in an area where Wi-Fi is available. Many cafes, retail locations, and sometimes entire cities will offer free Wi-Fi.
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