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shows how to easily activate the wifi hotspot (also called MiFi) function on your Samsung Galaxy phone. Some of the major carriers (Verizon, Sprint, AT&T) allow you to use your Android phone as a wifi hotspot. Some cellular plans include the hotspot function with no extra charge. However, when performing this setup, you may see a message about "subscription required". That means, using the phone as a mobile hotspot requires an additional fee. The way this works is, the phone has a 4G connection to the Internet. The phone then sets itsself up as a wifi access point. When you connect your tablet or laptop to the wifi access point (your phone), the phone then acts as a router to share it's 4g Broad Band Internet connection with the devices you connected.