Android is a widely used operating system that powers many devices beyond just smartphones. It has seen tremendous growth since its inception in 2003, with over 400 million active devices and 1 million more activated daily. The open nature of Android has allowed it to be adapted to run on phones, tablets, televisions, cars and even home appliances. However, this openness also introduces security and battery life challenges. A variety of manufacturers produce Android-powered devices, helping Android capture a significant share of the worldwide smartphone market.