No SIM card S7
I have a Galaxy S7 that I've had no issues with for almost 2 years, but now I am not able to use the phone. A couple of days ago I got an invalid SIM card error and when I rebooted my phone, I was able to use it for about 15 minutes before the no data would appear so every time the error showed up, I just kept rebooting . Then this morning I got an error that said no SIM card but when I took out the slot for where the SIM card is located, I found there was no SIM card but there had never been on since I purchased the phone. I tried rebooting several times but I haven't been getting any data connection and just kept getting the SIM card error and now I can no longer use my phone. After the last reboot this came across my screen: "Attention Power off your device, insert the service provider UICC that came with the device, then power on the device." I have no idea what to do and am at the hospital with my mother and really need to have communication with my family so I would really appreciate help with this issue.
Thank you in advance for your help!