Depends on what kind of cell phone, and what kind of effect you're referring to. If the cell phone uses integrated circuitry, a strong enough electromagnetic field could fry the circuits themselves (but that would require an electromagnetic pulse emission somewhere near the size of a nuclear bomb's). An a highly electromagnetic field could also affect a cell phone if the phone relies on a magnetic hard-drive.
Almost all computers rely on magnetic hard-drives these days, which is why it is strongly suggested that you do NOT put magnets anywhere near computers, as it would mess around the hard drive.
The phone gives of low level electromagnetic radiation whenever it is on. It uses electromagnetic waves to connect to the phone mast to send/receive calls. Your phone ringing had no effect at all on the levels of electromagnetic radiation. Anyway, your phones electromagnetic radiation DOES NOT HARM YOU. If that's what your thinking, many investigations have shown NO HARMFUL EFFECTS of using phones.
we use electromagnetic waves in radios and cell phones
radio waves.
Of course: phones transmit and receive electromagnetic signals, which are radiant energy.
mobile phones use microwave radiation
no
the biggest effect is cell phones
Because that's the only way for them to communicate with the network !
Electromagnetic radiation, in the microwave portion of the radio spectrum.
Radio waves in the microwave section of the EM spectrum.
Sliver phones do not seem to be highly rated by cell phone users. It seems the screens scratch easily and the connectivity is not all that good. It is not a favorite of cell users.
Radio, i.e. electromagnetic. They are simply two-way radios.