first to say don t adjust your seat, call a crew member for assistance and they will help you get that phone, realize damaged phones can spark a fire. by the way, speaking of fire on board, crew plants are trained in lithium-ion batteries. what you want to do the second that happens is crew member identifies the fire, grab an extinguisher, open the overhead bin enough to get the fire out inserting a fire extinguisher and doused that thing with water. water is your best friend after you control the flame, wait 10 or 15 minutes and the device gets removed to a laboratory waste bin, submerged in water and have a passenger disconnect the power source. if it is not on fire it is safe to do that. does are going to be regular in the future. you will see this more and more.