BlackBerry 9800 Sim Card Jumper Ways Repair Solution
https://gsmfixer.blogspot.com/2015/09/blackberry-9800-sim-card-jumper-ways.html
The reasons behind BlackBerry 9800 Sim Card not working problem may be the faulty capacitors, faulty points of sim jacket or water damage in the board. First step for this problem solution is to wash the board with thinner and check whether the problem in solved or not.
If the BlackBerry 9800 Insert Sim problem still exist the make the following jumpers on the highlighted points.Please be very careful while repairing, in case of any damage we are not responsible.