It contains every detail of cell phone jammer

Automatically shut down the phone, also known as automatic power-off, is divided into irregular shutdown button to shut down, calls shutdown boot after shut down, unable to maintain the boot close the clamshell shut down and launch the shutdown seven kinds, these failures are more annoying and difficult to exclude failure, maintenance is often impossible to start with, and even some experience in the maintenance master confusion maintenance to observe, grasp the nature of the fault, repair this failure is not difficult. The following were analyzed. From time to time automatically shutdown. Phone from time to time shutdown the phone is switched network, call normal, but sometimes it will suddenly shut down. This failure There are two main, one caused by poor contact between the battery and battery contacts. If the school adopts the medium power   cell phone jammer .
Power IC output voltage is unstable, the power supply circuit of the Weld or poor contact, resulting in mobile phone protection. Moisture and the phone fell to the ground could easily lead to this phenomenon. Maintenance, you should first check whether the battery contacts is good contact, and if normal, should focus on strengthening the welding of the circuit. Phone button will not shut down a press some key phone automatically shut down, mainly due to the integrated circuits or components of the buttons below Weld Weld parts due to the action of forces sealing off the keys, causing the phone to shut down . Maintenance, in a targeted manner to strengthen key lower part of the integrated circuit or component welding generally solve the problem  cell phone jammer  . Calls shutdown phone can boot network, but also make a call.
Unable to maintain power is to hold the power key to open the boot, but loosen after automatic shutdown, the fault is more common in the Ericsson mobile phone failure, especially Ericsson, the T10, T18 mobile phone the probability of more judgment is: boot to continue to hold down the power button, the phone is switched on and properly registered online, loose button the phone will automatically shut down. This failure phenomenon is general for the boot to maintain signal unusual cause, we know, only the CPU, hardware and software self-test passed in order to generate the boot to maintain signal, can not produce a continuous boot to maintain the signal, one CPU part of the damage caused  cell phone jammer  , the second is The software is not normal.