I updated my phone a couple of days ago and now I have no network connection. On reboot I get a message that says my SIM is not supported. Spent hours talking to my carrier, got multiple eSIMs, and still nothing. Anyone else have this issue and if so, have you found a solution? My phone is a S25+ and I have been using it without issue since June 2025.
Have you reached out to Samsung tech support? May have to have it reflashed. I would try a factory reset first but if that dont work and If your tech savvy, xda has instructions on how to do it yourself but it may also not fix your issue or make it worse. However, usually a reflash would fix the issue as this is a sign of a corrupted update. You'll need to send it to Samsung and have them do it for you or if you know what your doing..... 🖖🏻
Hello Sketchbig, welcome to the Samsung Community! I understand your frustrations with your SIM card not working correctly with your device. Most issues with your SIM card will need to be resolved by your carrier. Before you contact them, there are a couple of things you can try first, like checking the SIM card for damage or swapping it with one from another phone.
Remove the SIM card and inspect it for damage or corrosion. Reinsert the SIM card, making sure it is properly installed in the tray.
On most models, the SIM card should be placed on the tray with the gold-colored contact facing upwards. If you insert the tray into the slot while the SIM card is placed improperly, the SIM card may not be recognized.
You can check out our guide to make sure you are removing and inserting the SIM card correctly.
If you have another active line with your carrier, you can try that SIM card with your device.
If your SIM card continues to have issues, you will need to get a replacement SIM card from your carrier. You can also try contacting your carrier if you continue to have issues with the SIM card.
I'm having the same issue with my S24 Ultra.. there is a glitch in the new security patch update and has to be reflashed and back to the previous update.
