Samsung X700 SIM Card Problem Fix With Jumpers
https://gsmfixer.blogspot.com/2015/11/samsung-x700-sim-card-problem-fix-with.html
This post will provide you the hardware repair solution for sim card not detecting problem it the help of making jumpers. In mobile sim card not working errors may occur due to the fault in the hardware or it may be some software. If you are confirmed that the problem in concerned with hardware then here is diagram to solve Samsung X700 insert sim problem.