SIM Card Not Inserted Error in Samsung Galaxy S4

An email was recently sent to us via The Droid Guy Mailbag which reads, “I keep getting the error message ‘SIM card not inserted’ and the phone will only make emergency calls. The card is in. I have a Samsung Galaxy S4.”

The SIM Card Slot is Defective or Dirty

The usual culprit in the “SIM card not inserted” error is a hardware failure on the part of the phone. It is possible that the one or more sensors in its SIM card slot is defective or dirty. If the issue is just dirt, just remove the SIM card from its slot and simply blow an air directly into the area. This will likely remove any stuck foreign particles in its sensors. But if you suspect that the sensors are really defective, bring your Galaxy S4 to an authorized Samsung technician and have the faulty part repaired or replaced.

The SIM Card is Not Working

Restart your device and reinsert the SIM card. Ensure that it is positioned properly. If the issue persists, try inserting another SIM card in your phone to test whether the SIM card you are using is defective or not.

The Phone is Locked to a Specific Carrier

The “SIM card not inserted” error also occurs when you are using a SIM card not supported by your unit or when your phone is locked to another carrier. Confirm with the vendor of your phone if it is locked to a specific carrier. If it is locked, have it unlocked by a technician or you can use an unlocking product offered online.

There is a Software Problem

Start your Smartphone in Safe Mode. When doing so solves the problem, there might be a third-party app interfering with the normal function of your device. If this is the case, just remove the problematic app or perform a Factory Reset to solve any glitches in the system files.

On the other hand, if the issue still occurs under Safe Mode, then, there is definitely a hardware problem plaguing your device.

Email Us Your Problems Related to Android

For more questions about Android devices, email us at [email protected].


  1. I had this message,turned out it was the SIM card adapter that wasn’t putting the nano sim into correct position in the sim reader,
    SIM card adapter was an original from a Vodafone sim,latest edition with inbuilt adapters,
    Used generic adapter,since s4 uses an micro sim and my new sim was a nano,phone works now

  2. I do not like this throw away world, which is why il let you know how to repair yourself because taking it to a shop will cost more than the phone itself!

    I have found that if you have never opened up the phone and never touch the SIM. The Charging Dock Port, is the number 1 fault. If that does not work, replace the SIM Card Tray.

    Everything can be purchased on Ebay and instructions on Youtube.

    Just work with care and be careful not to crimp the antenna cable when putting it all back together.

    Please note, only do this if it is not covered under warranty! Because it will void your warranty.

    Good Luck 🙂

  3. I think that you are wrong. For the samsung galaxy S4 the kitkat version 4.4.2 has a problem. I have been reading some information about it on internet and It seem to be fixed on the version 4.4.4

Leave a Reply

Your email address will not be published. Required fields are marked *