How To Solve Samsung Galaxy S3 “No SIM” Card Problem

We have already answered some questions regarding the Galaxy S3 “No SIM” card problem and errors related with it. However, the information we’ve provided wasn’t enough especially for non-savvy users pushing them to send us email asking us to provide more detailed tutorial on how to solve the problem. So here it is…

Overview of the Problem 

No SIM card error on the Galaxy S3 is not really a serious problem, however, it occurs indiscriminately. So anyone who has the phone can experience this problem anytime, anywhere. Another thing is that, nobody knows when the error pops up. The worst case scenario would be if the user is in a place where he or she has no access to other SIM packs when this problem occurs.

Possible Causes 

There could be a lot of factors that may result to No SIM card problem. Fortunately, majority of users who reported to have experienced this problem said the issue can easily be resolved. So, if you are experiencing this issue right now, it could be because of one of the following:

  1. Phone Load Time – every time a smartphone is turned on, it loads a bunch of drivers and services necessary to run all system apps. However, there are times when the phone loads a little slower than usual and that could be the reason why the SIM card is not detected immediately.
  2. Loose Connection – if one of the pins cannot touch the interface on the SIM card, the system reacts immediately popping the No SIM card error window. It is actually one of the most common problems cellphone users can experience.
  3. Corroded Interface – over time, the SIM card’s interface will accumulate dirt for some reason. When this happens, the pins and the connector couldn’t establish a good connection that would lead to the problem.
  4. Damaged SIM Card – this isn’t a rare problem, in fact, many of SIM card-related problems were caused by damaged SIM packs. If you’re tied to an operator, one call to the hotline could solve this problem.
  5. Damaged Phone Connector – of all possible causes mentioned here, this one’s rare but it doesn’t mean it couldn’t occur to you.

Solving No SIM Card Problem 

The best thing for any use to do when this error occurs is to use the elimination process in determining what caused it.

  1. Try rebooting your phone first and wait until it’s fully active to see if it still displays the error.
  2. After a reboot or two and it still persists, turn the phone off and open the back panel. Take the battery out and then the SIM card.
  3. Using a soft and clean cloth, gently rub the SIM card’s connector to clean it. Re-insert it and turn the phone on to see if the problem was solved.
  4. After doing the above steps and the error still shows, it’s time to use a bit of unorthodox way. Try to see if you can insert a small piece of paper between the tray and the SIM card. Doing this will push the card a little more onto connectors. If it were a loose connection causing the problem, this step can solve it.
  5. Test the card with other phones and see if it works. If it does, then there isn’t a problem with it, it’s the phone. But either it is the phone or the SIM card that has a problem, you need to call your provider so the card or the phone would be replaced.

The first four troubleshooting steps can actually be done within five minutes and in that span of time you can figure out whether to call your provider or not.

We are still entertaining questions from our readers, so feel free to email us at [email protected] if you have problems with your phone (whatever it is).

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17 thoughts on “How To Solve Samsung Galaxy S3 “No SIM” Card Problem”

  1. Solution #4, saved my phone. Sometimes the silly solutions can lead to magic.
    Thanks a ton buddy.

  2. Hi. I’ve changed the sim/sd card slot and still doesn’t recognise the sim card. Any idea whats wrong? What could I do next?

  3. Hi how are you doing i would like to know how to fix this error problem on my galaxy s3 mini i have tried cleaning the sim card and also the paperin between methods please help

  4. Hi
    I am from Karachi Pakistan. I have a problem my phone Samsung galaxi SIII after restarting my phone show a question mark when I open that question mark I saw that “”” This SIM card is from another source “””
    Please tell me how I removed that .

  5. I dropped my phone in water (very very briefly, about 10 seconds before I got it out) and immediately turned it off, opened it up, dried everything off. No water was inside at all. Just wondering if it’s more likely that this affected the phone or the sim card. It’s the first time (in 15 years of owning cell phones) that this has ever happened to me.

  6. i tried it on other phone and it detects. how am i supposed to make it detected in my samsung s3 mini?

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