Power off, remove and clean the SIM and tray, reinsert firmly and restart. Check the SIM is turned on in Settings → Network & internet → SIMs. Test the SIM in another phone; ask your carrier for a replacement SIM if it fails there too.

What's going on

SIM contacts can lose connection after drops, and old SIMs wear out. Dual-SIM phones can also have one SIM switched off in settings.

What you'll see

  • “No SIM card” or “Insert SIM” message.
  • No service icon.

What causes it

  • Loose or dirty SIM/tray.
  • SIM disabled in settings.
  • Damaged or old SIM.
  • Software glitch.

How to fix it

  1. Reseat the SIMPower off, clean contacts with a dry cloth, reinsert.
  2. RestartThen check the SIMs settings page.
  3. Enable the SIMSettings → Network & internet → SIMs → turn on.
  4. Test in another phoneDetermines if the SIM or phone is at fault.
  5. Replace the SIMCarriers replace worn SIMs, or offer eSIM.
How to confirm the fix: The carrier name and signal appear.

Stop it happening again

Handle SIM trays carefully and consider eSIM if supported.