Can’t activate/no service after restoring from boot loop

Hello so I’ve done everything I can think of with this phone so maybe someone can give me advice.

So my iPhone7 went into a boot loop. Now after a lot of searching on the web, updating iTunes, I was finally able to get my phone to connect to iTunes. I managed to get the phone updated but it involved a system restore on the phone. The problem now is that the phone can’t complete the set up procedure and it tells me that it can’t activate the phone, I’ve also noticed a “no service” in the upper corner.

Eventually I get a message on my computer telling me that there is an issue with the sim card. Well so I shut down the phone took out the sim card and replaced it, powered back on, same problem still.

I’ve done a lot of research on this phone and have done everything that I could find to fix. I do have a new phone coming as I went to U.S. Cellular before going through the above steps, but it would be nice to get this one repaired so I can send the new one back and save a $175 dollars.

I know that the iPhone 7’s have problems with boot loops, no service problems, etc. I didn’t drop my phone or something prior to the boot loop, so this problem seems like a random glitch. But maybe someone knows a way that I can get my phone fully activated.