| http://www.w3.org/ns/prov#value | - The cellular phone may further include first to N-th printed substrates wherein N is a positive integer equal to or greater than two, in which case, the second unit may be comprised of first to N-th switches formed on the first to N-th printed substrates, respectively, the first to N-th switches operate in synchronization with one another, and the first to N-th switches are grounded when the detec
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