Use a SIM ejector tool or paperclip to gently remove the SIM tray. Take out the SIM card and inspect it for damage, such as scratches, chips, or bends. Carefully place the SIM card back into the tray, ...

Network outages can often be traced to four error-prone activities: fault analysis and response, configuration changes, scaling and failover, and security policies. You might have been alarmed to read ...