An electrostatic discharge (ESD) event caused when the user installs or removes a SIM card can cause catastrophic or latent damage to the SIM card connect circuitry.
Solution: PESD
Extremely low capacitance ESD protection devices (PESD) help shunt ESD away from sensitive circuitry in electronic devices without inducing signal distortion.
Read more about the Raychem ESD protection device: PESD