In this article 24 Channels It talks about the 7 most common reasons why your phone can’t see your SIM card and how to fix them.

Why can’t the phone see the SIM card?

• Incorrect insertion of the SIM card. Make sure the SIM card is inserted into the tray correctly. Check if the format of your SIM card matches the format of the slot.
• Damage to SIM cards. Inspect the SIM card for damage. If it is scratched, cracked or has other defects, contact the operator for replacement.
• Damage to the SIM card slot. Check the SIM card slot for dust, dirt or other debris. Also inspect for damage.
• Software error. Sometimes the problem may be caused by a software glitch. Try restarting your phone.
• Inactive SIM card. Make sure your SIM card is active. Contact your carrier to check the status of your SIM card.
• Incorrect settings. Check the mobile network settings on your phone. Make sure the network type is set correctly.
• Firmware. Sometimes the problem may be caused by incorrect firmware. Try updating your phone’s firmware.

How to fix SIM card problem

1. Check that the SIM card is inserted correctly.
2. Clean the SIM card and SIM card slot.
3. Restart your phone.
4. Reset your phone to factory settings.
5. Update your phone’s firmware.
6. Contact the service center or operator.

If your phone does not see the SIM card, do not rush to get upset. In most cases, the problem can be fixed on your own by following simple steps. Try the tips in this article; Your phone will most likely work again.