Does a cell phone jammer harm mobile phones?

The answer is no. Cell phone jammers will not harm mobile phones, and will not increase the malfunction of mobile phones, nor will it reduce the service life of mobile phones.

The signal frequency emitted by the cell phone jammer is white noise with the same frequency as the mobile phone, which is equivalent to the interference signal of the mobile phone, preventing the mobile phone from contacting the base station. If the mobile phone is in the coverage of the cell phone jammer for a long time, it will cause the mobile phone to search for signals and try to get in touch with the base station, so it will increase the power consumption of the mobile phone invisibly, but it will not cause harm to the mobile phone. If you are in the coverage of the mobile phone jammer for a short time, the power consumption of such a mobile phone can be basically ignored. If you know that you will be in the coverage of the cell phone jammer for a long time and do not want to increase the power consumption of the mobile phone, it is recommended to turn off the cell phone and wait until you walk out of the coverage of the cell phone jammer before turning on the cell phone.