How the problem is and where it comes from?
Notice that this problem occurs when the problem is that the B connector or SIM connector with the problem B is usually disconnected. Another reason for this is that the problem of connecting with companies that have SIM carter supply, this problem occurs. So I gave a diagram of the Problem-Solution by step-by-step here and how you can fix this program. I detailed below
Solution Method :
To solve this problem, first, you need to clear the mobile motherboard. Then you have to do sim card turkey bridging all the days with a multimeter that you have breeding all the time that your reading is coming in the right direction and the vibration shot next to it, notice that somewhere a company has broken or after I did this, I gave you an image. See jumper
- First, clean the motherboard
- Then look at the SIM connector if the SIM connector is not correct then connect the connector.
- Then read the sim connector pin if the readings are not correct, then see the picture below.