No service after iOS 11 update

I assure all my friends that such problem is neither apple hardware nor software related issues, absolutely not. I have been suffering from such issues since one month of my purchase of iPhone SE i.e February'2018 from Apple store. I have contacted both apple support and my network carrier i.e. Airtel India. None of them have resolved the issue. Finally I visited the network carrier store i.e Airtel store and asked for SIM swap. Actually this SIM swap is done when your SIM is either lost or damaged without loosing your mobile number. The executive asked me about MNP if done previously and how many months back ? I said yes I have done such Mobile Number Portability from other network carrier i.e. BSNL India two months back. The executive has issued me one new SIM (H1 type) written in sim card cover "4G MNP Ready" free of cost and requested me to insert the new SIM when the network signal goes off. I waited about exactly two hours and suddenly signal was off. I inserted the new SIM. As soon as iPhone open, immediately I see signal. From that day I didn't see "no service or searching". This is the trick that has to be followed for resolving the issue definitely.

https://support.apple.com/en-us/HT201415

So bacailly the rep at apple told me that it was something to do with the SIM card reader and that it would cost the same as just getting a new iPhone 7 since they reduced it from taking mine back. I ended up getting a new one but I have not updated it to iOS 11 and I don't plan on it. It still doesn't explain why it wouldn't want to restore or update when it was in recovery mode. The phone worked great except the no service and searching issue.

I too have been experiencing this problem (at&t). To be more detailed, I experience the following:

- When my signal drops to 2 bars, that’s all she wrote... The phone will hang trying to load data of any kind.

- As a result of trying to get a signal, my phone will get warm (no doubt turning up the amplifier), and the phone will start burning through my battery. I sonetimes find myself down to 20% battery after lunch, from a full charge in the morning!

I can tell you for certain that this problem started IMMEDIATELY after the carrier update pushed on or around October 18th. The second carrier update pushed last week did nothing to resolve this issue, nor did upgrading to iOS 11.0.3... The carrier update is DEFINITELY what caused this issue, as I immediately noticed the change in my phone’s performance - the changes in my phone’s data and battery performance was like night and day, so that’swhy I know for a fact that it was that mid-October carrier update.

So here’s the question - is there any way that the previous Carrier update can be pushed back to the phone? Whoever is in charge of managing those updates (the carrier or Apple) should roll it back to the version that was active before that October update. I’m willing to bet that it would resolve the issue.

I ended up trying to restore my phone in dfu mode to get around the failing to register error. It would get through most of the restore until ‘updating firmware’ Step. It would then fail there every time. I then took it to apple Support and they decided it couldn’t be fixed and gave me a new one. I luckily had apple care. i Think it’s a software issue causing the hardware one. The phone didnt seem to notice i had a SIM card and it also didn’t throw the usual missing sim error when I removed it. What a waste of a week!

Hmmm...I am skeptical that the "antenna is causing the problem" is the issue and that it "just happens" to coincide with the iOS 11 update. Also, in my case the issue is with an original iPad Pro 12.9in and not an iPhone. I have an iPhone 6 Plus that DOES NOT have this issue. My iPad Pro is in a Logitech Create Keyboard case (recommended by Apple) and is fully protected from HW damage...so I cannot fathom how my "antenna" is "suddenly" an issue...just out of nowhere.

This issue started happening after the iOS 11 update. Frankly, it sounds to me like the "Genius Bar" you've visited has not yet learned the proper lesson from the recent iOS battery-gate issue.

No way that "replacing the device" is the proper fix for everybody who is reporting this issue since the iOS 11 update. And since my original 12.9in iPad Pro is most certainly out of warranty, I don't think Apple is going to "replace" my device without some money exchanging hands...probably large amounts of money. And I am NOT about to buy a new iPad Pro because of this. Telling me to get a new device for this issue is the same exact thing that Apple just recently got into trouble for on the battery/iOS SW slow down issues!

I would be interested to hear from folks who've gone ahead and done an actual factory reset and then re-configured their device (NOT RESTORED FROM BACKUP) to see if that has fixed the issue. I highly suspect it does. However, to me it is unacceptable to have to factory reset my device due to an iOS update. That is firmware/OS upgrade 101 rules, and having to do so is typically only seen with cost-effective foreign electronic manufacturers, where they do not understand proper/expected product/software lifecycle management. You should NEVER require the device to have to be reset to factory defaults because of your Firmware/OS update...except in VERY, VERY EXTREME circumstances. (Like a case where the memory table needs to be reallocated or a similar type of drastic OS/Firmware internal architecture change. Even then, it indicates that SW Engineering did not properly plan for product lifecycle management.)

I have the exact same problem with my iPhone 7, and tried all solutions recommended here and elsewhere. I went to Apple store and Verizon store, and both were very familiar with the problem. They said this is a hardware problem recently seen in iPhone 7s. The best Apple could offer was replacing the phone for $320 which was absurd and unfair in my opinion. They launch some update patches that hurt the phone, then charge you to replace the phone. It should be a profitable business I guess!

To everyone in the UK get your phone returned under your consumer rights. As they are saying it’s a hardware fault, so providing there’s no damage to your phone they need to ensure all hardware needs to be fit for purpose for 6 years.

If it shows as a manufacturing fault then it is not fit for purpose and will be exchanged, repaired or refunded.

Call who ever you bought the phone from, i.e. EE or Apple.

Apple keeps deleting my post because I spoke up more of what the phone does after the phone goes to “No Service”. If you wait 4-5 days it will go into reboot! If you plug it into your computer to update, it goes into reboot mode! If you let the battery die, it goes into reboot! Once in reboot, that means the phone shorted out because of the no service issue. So get Apple to replace phone right away before it gets into reboot because then they think it’s a different problem, and not the “No Service” issue.

I hope you got your antenna repaired while there. It's fairly easy for us to knock them about in our devices. Wi-fi antennas are the same. Replacing helps

New phone Non-Apple is the solution.

I am having the exact same issue with sprint! Apple said it's a hardware issue but it has happened to my other friends after they ran on ios11 , nothing recommended has worked so unfortunately I have to pay that amount to or switch to something else.

Yep. There are known issues with Sprint & Verizon.

I know many have resolved it by getting new Sim cards from their carriers.

Also, the new 11.1.1 version was released this week.

I'm hoping the carriers update the firmware to coincide

I’ve had the same problem ever since updating. SUPER INCONVENIENT.

I’ve tried all suggestions:

Carrier settings

Reset network settings

Reset ALL settings

Take SIM card out and reinsert (worked once)

Wipe device and restore

Hard reset (usually works for maybe an hour or so)

Finally, I got a new sim from Vodafone (Australia) and it didn’t help at all.

I’m not happy that a minor update can cause the most critical problem a phone can have. Out of warranty and will not be pursuaded to upgrade when my device is in otherwise perfect working order. I’ll also not pay a cent for support. Not happy.