My Samsung Phone Lost Signal - It's Stuck in Airplane Mode

Today, I turned my phone off and on, and suddenly, I was met with a 🚫 symbol! My phone has absolutely no signal, and I can't make or receive any calls.

I've tried everything. I've turned the phone off and on countless times, and I even performed a factory reset, but the same problem persists. The airplane mode icon appears faintly in blue, and the no-signal symbol is still there. When I turn on Wi-Fi, airplane mode disappears, but the signal bars remain a faint gray, indicating no service. I simply don't understand why this happened so abruptly. I was using my phone perfectly fine yesterday.

Samsung, your solution needs to be effective! Fix this signal and airplane mode issue on my Samsung phone immediately! I demand that this problem be resolved as soon as possible.