/
This is nokia 1200 insert sim solution.View This repair picture and work following this.This solution is tested.
How to repair it : If Displaying insert sim in your phone.then remove sim card clean sim card and replace sim and see result if result same then check your sim card using other running phone.Next clean full pcb and hot with Stan light and see result.If not ok then rehot sim ic then replace sim ic.If sim ic not available in you.then make this jumper.