Internal battery.
when did the cell phone come out
Electrical energy is used to charge a cell phone. When you plug your phone into a charger, the electrical energy is converted into chemical energy stored in the phone's battery. This chemical energy is later converted back into electrical energy when you use the phone.
The flow of electrons through a wire to charge your cell phone is a form of electrical energy. This electrical energy is converted into chemical energy to store in the battery of the cell phone.
Electrical energy is the type of kinetic energy that powers a cell phone. When you charge your phone, electrical energy is stored in the battery and converted to power the device when in use.
the first car phone
Energy in a cell phone primarily comes from the battery stored within the device. When you charge the phone, electrical energy from an external power source is transferred to the battery, converting that energy into chemical energy for storage. The phone then uses this stored energy to operate when not connected to an external power source. Additionally, during use, the phone can also draw energy from nearby signals, but the primary energy source remains the battery.
A cell phone produces electromagnetic radiation in the form of radio waves to transmit and receive signals. This energy is converted into electrical energy to power the device.
1999
potential electrical energy
An ordinary cell phone has cell batteries (of course). Chemical energy is stored in the batteries and is converted into electrical energy when needed by the phone. This energy is converted into radio waves, or electromagnetic energywhen we speak and travels to other phones. It can also be converted into light energy for display and like almost all electrical energy conversions gives out thermal (heat) energy as waste.electrical energy -------> electromagnetic energy+light energy+heat energy
yes nokia cell phone batteries sometimes do come with a warrenty depending on where you buy it and rather or not its new cell phone batteries of very expensive so its best to buy new with an warrenty
ummmm.... well somebody decided that if you could have the internet and a cell phone in one little cell phone then you could have a cell phone, internet, ipod, gps, camera and whatever else in a one little cell phone.