Since updating to iOS 17.5.1 I have no service!

I’ve had my phone checked. No hardware issues. The sim was replaced and network came back, however, messages and FaceTime are still not working. That is definitely a software upgrade issue.

Since two days I have discovered the same issue on three iphones ( XR, 13 mini anr 15 pro max) on two SIM.

common point: IOS 17.5.1

is anybody know what happens?

UPDATE - I ordered a new Sim, removed (important) the eSim and it briefly worked. I then flattened the whole thing and reset. So far so good. I would point out that I also noticed issues between the watch and phone so that was also reset. (its been several days and its all working again)

It's not always the iOS update's fault!  Many things can cause phone problems.  If you tell people you think it's an iOS update, it might make it harder to fix or find a solution for the real issue.

Remember, the right question often leads to the solution! Please look in the right direction.

iOS updates aim to enhance user experience, boost security, and fix bugs rather than disrupt core features. The majority of the issues after updates might stem from underlying, unmentioned factors. Updates won't typically alter personal data but may refine settings or features. Backup before major updates for safety. Review Apple's update details and backup advice for a smooth process.

Kindly consider checking your settings and addressing any device issues before attributing the issue to external factors. This could be a pure coincidence that the iOS update affected the iPhone functions.

Before initiating a standard iOS update, it's advisable to create a backup. Have you completed this step? If yes, proceed with the restoration from the backup.

See what each update does: About iOS 17 Updates, About iOS 16 Updates, About iOS 15 Updates, About iOS 14 Updates, About iOS 13 Updates, About iOS 12 Updates, and so on...

I had the same issue on my iPhone 14. With as many complaints on the update of iOS and considering there were no issues with the iPhone before the update I would consider it was the update that created the issue. I had a diagnostic test and was told it must have had problems before the update. I don’t agree. I had to replace my very expensive phone with another very expensive phone.

I had a similar situation but it turned out I also had an eSIM running. If you do remove the eSIM and from your mobile provider replace the physical SIM card. Force a restart and that should get you going.

If not then your warranty will cover the phone if you have one with Apple. Hope you find success.

I don’t think the SIM are the trouble. I also changed one of my two SIMs and few hours later the second SIM on a different phone had failure.

I have to remove the SIM then replace but can’t trust it.

since my husband and i updated to ios 17.5.1 we have no cell service in the house. at first we thought it was his phone, since I was gone for a week. so he bought a new iphone 15 pro max over the weekend. new phone, same problem. now that i'm back home i have the same issue with my 14 pro max. we get calls and can hear the caller, they can't hear us. takes going outside and restarting the phone to get 2 way talk. neither one of us had this issue in the house before the update. i work from home, so cell is my only form of communication. none of the fixes noted online worked. anybody find a work around?

Same here. I can occasionally make a WiFi call, and can use FaceTime Audio but all other calls get "call failed" or will simply not go through

I seriously doubt it's just a coincidence that we've all started having trouble making calls since this update. WTF, Apple?

I've experienced similar issues with my iPhone 12 using iOS 17.5.1, where it wouldn't connect to the network and showed 'No SIM' in the settings, even though my other eSIM number worked fine. I tried various fixes, including removing and cleaning the SIM and slot, using a different SIM, performing a hard reset, and resetting all network settings. Each time, the SIM would work temporarily before dropping out again.

I even switched carriers, hoping to resolve the issue, but the problem persisted. Eventually, I switched to an eSIM with my carrier, which "fixed" the issue but wasn't ideal since I couldn't use my other eSIM simultaneously. Additionally, I faced another problem where I couldn't activate iMessage with my new carrier after porting my number.

What finally seems to have worked is turning off and deleting my NordVPN app. This allowed me to activate iMessage with my new carrier, and the other SIM card started working. After reinstalling and reactivating NordVPN, the SIM and network are still functioning for the past day. 

I believe there's a software glitch in the latest 17.5.1 update, as I hadn't encountered any issues with my SIM card before. Hope this feedback helps!"

Update : I forgot to mention that after I deleted my NordVPN app I did a hard reset on my iPhone an then this seem to allow my Sim card to work and imessage to connect and then reinstalled my Nord VPN app and switch my VPN back on again that cleared out this bug in the software for now at least?

My IPhone 12 Pro Max was working perfectly. Then the phone updated automatically to iOS 17.5.1 overnight, woke to find I had no cellular data service.

I contacted Apple, who were able to log on remotely to run the diagnostics scan, they advised that the cellular module/chip appeared to have burnt out or failed. This was also confirmed by an Apple store. They suggested it was probably just a coincidence or the phone had a existing weakness, rather than due to the update.

The tech. in the store said they never have Automatic Updates switched on. They always wait a while to see if there are going to be issues before adopting the latest iOS.

I'm now having to use an old Iphone 6 for cellular calls and the 12 on WiFi only, bit of a pain!

Hello, I have the exact same problem on my iPhone XR since I upgraded to IOS 17.5.1 (no service)

I tested two different sim, wipe complete with my phone

Update ios 17.6 b1 and b2 don't work

If the Apple team looks at this message, can they make IOS 17.5 available for downgrade please via itunes

Hi, I hope this helps

(iOS 17.5.1)

Excuse my english i'm french

I've experienced this issue 2 times already in the last week. Here's what I suggest you to try :

1: Do a force/hard Iphone restart.

2: Go for a network settings reset.

3: Take out your SIM card on the Iphone that's not receiving any signal. Check if it works on another Iphone to make sure it's not a simple bad SIM card. If you see it's working on another device, try transfer it into an "esim". You may need to pass through your carrier service to do that.

4: Delete any VPN & device management profile on your Iphone (If this option works for you like me, reset your Iphone to factory default before reinstalling any profile)

5: Make a backup save via lcloud to make sure you don't lose any data etc. and go for a factory reset.

6: Contact apple support and pray they found something else to fix your problem that's not written here

In my case, I had a corporative device management profile installed on my Iphone (14 Pro Max) for work and after I removed my management profile, I've done a factory reset and everything works fine for now.

I can't guarantee this is a permanent fix because it happened to me 2 times in the last week. The first time it happened, I didn't factory reset my Iphone like I did the second time. I will keep you updated if the issue reappears.

I've seen people report this problem on few websites, I hope Apple will fix this soon.

1-After iOS 17.5.1 update my iPhone 14 Pro is saying no sim every time [the sim is working on other phone ] same issue also in my friend iPhone 12 after iOS 17.5.1 is saying no sim (the sim work on other phone)

2- in my iPhone 14 Pro the screen is going off automatically and you can tell the app still runs .i heave to press the lock button after I repres it and the screen come on ….

3-the 2 iphones are getting slower

4- the battery is draining quickly

@apple I think you heave to fix this issue