Abstract:
A method and device for network/card locking of a mobile terminal, a terminal, a Subscriber Identity Module (SIM) card and a storage medium are provided. The method for card locking of a mobile terminal includes that: encrypted data sent by a mobile terminal is received; it is authenticated, according to the encrypted data, whether the mobile terminal can initialize a SIM card, and an authentication result is obtained; and the authentication result indicating whether the mobile terminal can initialize the SIM card is returned to the mobile terminal.
Abstract:
Disclosed is an antenna, the antenna includes a metal trace, an antenna feeder, and a power connector set on a printed circuit board (PCB), wherein the metal trance and the antenna feeder are connected at a feed point, the antenna is configured with a reactive element on one surface of the PCB board which is opposite to or the same with the surface where the feed point is located; and when a radio frequency signal of the antenna is at a low frequency, the reactive element is conducted, and when a radio frequency signal of the antenna is at a high frequency, the reactive element is disconnected, or when a radio frequency signal of the antenna is at a low frequency, the reactive element is disconnected, and when a radio frequency signal of the antenna is at a high frequency, a control switch of the reactive element is conducted.
Abstract:
The present document discloses an antenna unit and a terminal. The antenna unit disclosed by the present document includes an antenna circuit board, at least two neighboring antennas and an electromagnetic coupling module used for isolating coupling signal transmission between two neighboring antennas, wherein the electromagnetic coupling module is connected in series between the two neighboring antennas. The present document uses the electromagnetic coupling module to isolate signal transmission between the two neighboring antennas, i.e., electric signals in the two antennas are unable to be transmitted to opposite end, thereby reducing signal coupling between the neighboring antennas and improving the isolation between the two neighboring antennas.