My Solution

Some days ago a uncle came to my service center.He give me a samsung b130t mobile and he said  repair this.Then I check that phone and I saw That phone is insert sim problem.Then I open  the phone and start repair it Now I share how did repair it.First I check sim ways then I see sim ways is broken. Then I find where the broken sim line,and find the problem.If anybody want to repair it view below picture.



How to do this work: First see the picture and make jumper like this picture.