Why your smartphone shows ‘No SIM’ in top right corner even when the SIM is inserted?

No sim card error: One of the most common causes is improper placement of the SIM card. If the SIM is not seated correctly in ...
Techno-Science.net

12 Easy Ways to Fix No SIM Card Error Installed on iPhone and Android

Do you get the error message “No SIM Card Detected” or “No SIM Card Installed” after inserting a SIM card into your phone? This problem often occurs when you ...