Configuring path for dynamic library

On Linux system, to configure the path for .so to be picked up -
*) /etc/ld.so.conf
*) ldconfig -f
Conf file need to have the absoute path of the locations in order to be picked up from.

iPhone "SIM not inserted error"

I ran into this issue recently.
If your SIM is old, or may be having little distortion due to sevral times changing it into different handset, this may be the symptom.
During calls, after reboot also this does not get fixed.

Replacing the scheme worked out. My SIM was 4.5 years old and might have got damaged in last couple of handset changes during roaming. The damage is not visible though.