The Fire Phone was amazon's first smartphone, a way for them to break into the mobile space with a carrier ... Fire OS v3.5 which is based off of Android, and is powered by a 2400 mAh battery.

Our top picks for the best Android phones Best overall: Samsung Galaxy S24 - See at Amazon Best budget: Google Pixel 8a - See at Amazon Best camera: Google Pixel 9 Pro - See at Amazon Best battery ...