If you turn on the Tethering feature of a cell-enabled mobile device the device serves as a cellular modem for an attached computer.
Sharing an Internet connection from a mobile device with other connected PCs is known as tethering, sometimes known as phone-as-modem (PAM). A mobile device can be physically connected to another device using a cable, such as a USB cable, Bluetooth, wireless LAN (Wi-Fi), or other methods. The feature, which enables the device to function as a portable router, may be referred to as a personal hotspot or mobile hotspot if tethering is carried out through WLAN. A PIN or password may be required to access mobile hotspots. The mobile device with access to the Internet can serve as a router and portable wireless access point for devices attached to it. Numerous portable gadgets come with software that enables tethered Internet connection.
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