On your samsung mobile if you are getting a pop up message and sim card cant be activated error or saying no sim card inserted then your sim card is not detected by samsung galaxy mobile or sim card is corrupted or damaged and you need to reinsert sim card again and if your sim card is damaged then you need to contact customer care service and get a new sim card.
Step 1: Press and hold the power button for 3 to 5 seconds.
Step 2: Now, tap on restart.
Step 3: Wait for your samsung galaxy mobile to completely turn on.
Now, check whether your issue of no sim card inserted error message or cant be activated error will be resolved.
After restraining galaxy mobile, if you are still getting no sim card detected or inserted error, then follow below methods and fix no sim card inserted error message on any of the samsung galaxy mobile devices.
Due to software updates, there may be an issue as well on galaxy mobile devices, and you need to update your Samsung mobile to the latest version and check.
Step 1: Open settings
Step 2: Tap on Software Update
Step 3: Download and install the latest software version of samsung galaxy mobile and check.
Once you update samsung mobile, then your issue of no sim card detected pop up messages will be fixed.
Step 1: Grab sim ejector tool and remove sim card from sim tray.
Step 2: Now, wait for few seconds and insert sim card again into sim slot and check.
Sometimes, if your sim card is not inserted properly, then you will experience this issue of no sim card inserted error pop up message on Samsung galaxy mobile and once you reinsert sim card then your Samsung galaxy mobile will be able to detect sim card properly now.
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Remove sim card from galaxy mobile and clean sim tray (sim slot) and card by blowing some air into it and due to dust or debris, your sim card may not be detected by samsung galaxy mobile.
Remove sim card from galaxy mobile and insert sim card in other device and check if there is any issue with sim card and check and if your sim card is not detected on another device, then your sim card is damaged and you need to get a new sim card by contact your sim card provider and insert new sim card.
If your sim card is damaged then samsung mobile will not detect sim card and you need to get a new sim card if sim card gets damaged and insert it on your samsung mobile and your issue of no sim card detected issue will be resolved.
If none of the above solutions works for you, then you need to reset galaxy mobile to factory default settings and fix no sim card detected pop up message error or sim card cant be activated error or any sim related network issues.
Step 1: Open settings on galaxy mobile
Step 2: Go to General Management -> Tap on Reset
Step 3: Tap on Reset Network Settings and confirm in the pop up box and enter passcode or pattern and wait for samsung mobile to reset network settings.
After resetting network settings, your issue with sim card will be resolved and no sim card detected error message will disappear.
This means, Samsung mobile is not able to read the sim card that you have inserted and you need to eject and insert sim card again and clean sim card and get a new sim card if your sim card gets damaged.