Updating sim card
To take care of the above mentioned issues, here is what you can do: - Turn the phone off, open the lid on the back of the smartphone.- Take off the battery to expose the SIM card slot (some phones do not have the SIM slot blocked by the battery, so you may not need to remove it.) - Take out the SIM and clean the slot with a dry cloth or brush to remove dirt and grime.
Here is how you can do that: - Open the Settings menu on your phone.It will also try to re-establish the connection with the network, and while doing so will start the fresh search for the SIM card.- Press and hold the power button until the reboot menu appears. - Tap ‘Reboot' or ‘Restart' depending upon your phone.If there is a difficulty reading the SIM card even after inserting it, depending upon your phone, you may see an error message like, "No SIM card Inserted", "No Service", "Please Insert SIM Card", "SIM initialization failure", or "SIM card cannot be detected." Most times, this happens when the SIM card is not inserted properly. If you run into one of these messages, here are some ways to fix "My phone not reading my sim card'. Before doing this, don't forgot to backup and restore phone data on computer in case the data loss.
In most cases, power cycling or rebooting the phone takes care of this issue.- Now, you will need to look for the section related to Mobile Networks. Usually, you can find it under Connections or Networks.