I don't know much about mobile phones.. I have a question here..
I know that mobile phones always emit a certain kind of signal, but does that signal varies when that mobile phone sends text message?
Does a mobile phone emit a different/ distinguishing signal when it sends text message?
I know that mobile phones always emit a certain kind of signal, but does that signal varies when that mobile phone sends text message?
Does a mobile phone emit a different/ distinguishing signal when it sends text message?