I have an iPhone 11 Pro Max phone and I think twice I had this weird cellular data connectivity issues. I have a dual SIM setup with a physical SIM and an eSIM, both with voice and data plans. I was travelling in the country, probably with various coverage. I stopped at a gas station and I needed to check something. I realized I had no data connectivity. I switched to the other SIM and still had not data. I tried airplane mode on/off and still no data. I rebooted the phone and then I had data. Same thing happened 2 or 3 times in a few days. I'm running iOS 13.3. Any ideas?