Which component of a computing device drains the battery the fastest?

My mom and i are moving and we don’t have wifi for the next week, i want to know if using a using a hotspot with unlimited data is better than using regular wifi. i’m considering cost, speed, and data sacrifices.

Will do anything for brainlest so can you guys me out i will try my best to you out

What type of multimedia are live news feeds? live news feeds are examples of multimedia.