iPhone 11 Pro Updated to iOS 17.1.1 Issue - No SIM Available/SIM Failure, Settings > Celluar - Cannot Add/Remove eSIM. No Mobile/Data Service.

I'm so sorry to hear that you are dealing with something similar on your phone, please let me know if you find a solution for it.

I seriously thought I was the only one having this issue. I've been with over a dozen support agents with my carrier to get the eSIM to work and it just doesn't want to take on the phone. There still is no option for me to "add eSIM" and I don't see the "Set Up Cellular" option under the "Settings > Cellular" panel.

I contacted Amazon customer support as I had purchased this as a "Renewed Premium" through them with tech support. After several attempts of the same troubleshooting the phone with their tech support, still no luck.

They offered me a refund for returning the phone as they deemed the device defective and issued me a return label. So I went ahead and returned the iPhone to Amazon and it may take up to 30 days to get the refund issued.

I asked why so long? They have to receive the item at their Amazon fulfillment center, then they ship it to Apple to authenticate, and then Apple will send it back to Amazon to process. So each step could take maybe a few days to a week.

Yeah I think it's definitely a bug that's caused it. Hopefully the developers would see this thread and have it fixed on 17.1.2.

I was thinking about downgrading back to 16 or 17.1 when the iPhone 11 Pro was working, but I was told by my carrier that they won't support my device if it is not on the latest firmware and they do not recommend me downgrading to previous iOS.

This was the last thing I had expected from an iOS update. That I would lose cell service and that iut would delete/remove my eSIM after the reboot after install, and then have ability to add the service back on the device.

I already returned the phone to the seller after contacting them since they offered a refund and then I'll get a replacement iPhone sometime. I hope by the time I get the replacement phone or refund, they will already issue a fix for the iOS they release. I also ordered a physical SIM so when I get a replacement phone I'll try using the pSIM vs. eSIM option if the bug persists.

Unfortunately, the problem is not resolved. Are you also getting a SIM Failure error or No SIM Available? Also, does your iPhone recognize your physical sim card but would not let you activate the service or connect to your carrier?

My physical sim card I ordered from my carrier didn't come in time so I never got a chance to see if that would work for me. I wish it arrived days before the window for me to return it for a refund closed.

I am waiting on another iPhone to arrive today and hopefully it won't have iOS 17.1.1 installed on it and I can get service back on my phone.

I ended up returning the iphone 11 pro for a refund and upgraded to a pro 13 and ordered a physical sim card and that fixed my issue. However there is a new iOS 17.2 that had come out that may help with bug fixes.

Unfortunately I never got a chance to do any more trouble shooting as I ended up returning the iPhone 11 Pro for a refund and replaced it with a new 13 Pro and ordered a physical sim card to use with it. Have you tried the latest iOS 17.2 it may help fix it.

Have you tried to do any troubleshooting to see if it would work? If not, try doing a forced restart or shut down it completely for a few minutes and turning it back on.

Did that and more troubleshooting. Eventually I just returned the iPhone 11 Pro for a refund and upgraded to a 13 Pro and ordered a physical sim card and that's how I was able to resolve the issue.