Hello, I apologize for the inconvenience this has caused. Since I haven't heard back, I'm assuming the solution I gave you solved the problem. Please do not hesitate to contact me if you have any questions.
I'd love to help you look into this issue today, just let me know! :)
In case you missed my last response, I want to provide it to you again. You can always ask a follow-up question:
Since I didn't hear from you please try these general instructions.
What I could suggest you do is,
If you originally received your device from one network provider and your new SIM card is from a different network, the original network provider may have locked the device to their network.
Samsung, apple, etc does not lock any of its devices to any particular network. You will need to contact the original service provider or retailer to request an unlock code.
Some service providers may allow you to unlock the device for a small charge or for free, whereas others may not allow the device to be unlocked at all.
Thank you again for visiting JustAnswer, Please let me know if you have any follow-up questions or if anything in this answer was unclear, and I will be happy to help.
If you are not satisfied, we can go back and forth until you have the answer you need.
Thank you very much, and have a wonderful day.