After I update my iphone 11 to ios 14.7.1 i lost a signal. Carrier is not found. No service is flashing on upper screen. Please help me. I recently brought my phone. Hoping for a immediate response
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It will not be resolved with any upgrade, because it is not a problem with any version. It is a hardware or software problem with YOUR PHONE, not the version you have installed. I posted a troubleshooting article on the first page of this thread. Here it is again:
Go to Settings/General/About and look at Modem Firmware. Is the entry blank? If it is you need to reinstall it by restoring the phone to factory settings, then restoring a backup. Back up the phone first, of course:
If the modem firmware DOES have a value you probably have a hardware problem. The first step is what I just posted, but after that you need to contact Apple support using the Get Support link at the top of this page.
It will not be resolved with any upgrade, because it is not a problem with any version. It is a hardware or software problem with YOUR PHONE, not the version you have installed. I posted a troubleshooting article on the first page of this thread. Here it is again:
Go to Settings/General/About and look at Modem Firmware. Is the entry blank? If it is you need to reinstall it by restoring the phone to factory settings, then restoring a backup. Back up the phone first, of course:
If the modem firmware DOES have a value you probably have a hardware problem. The first step is what I just posted, but after that you need to contact Apple support using the Get Support link at the top of this page.
Start here: https://support.apple.com/en-us/HT201415
Well, with a 6 year old phone it may have just died of old age. However: Go to Settings/General/About and look at Modem Firmware. Is the entry blank? If it is you need to reinstall it by restoring the phone to factory settings, then restoring a backup. Back up the phone first, of course:
If the modem firmware DOES have a value you probably have a hardware problem. The first step is what I just posted, but after that you need to contact Apple support using the Get Support link at the top of this page.
I've just have a call from Apple Support.
They solved the problem, here is the instructions:
So simple ! Thanks !
You must follow the instructions I posted, not what you think you should do.
Uhm, the news are just getting out. More and more news sites are reporting the problem. Just try a search on your favorite search engine now and in a few hours.
Yes, Apple has broken something in the latest firmware Out of curiosity I have just swapped the SIM in the SE for a Dutch SIM that can roam on all three German networks here. When you register it on T-Mobile and wait the indicator bars get weak after 10 to 20 seconds. Then the phone says "No service" for a few seconds. And now comes the interesting part. The phone then registers on Vodafone (tower is around 600 yards from my home) or O2 (also around 600 yards) and the network connection is completely stable on both networks.
The possibilities that your phones still work fine are probably:
Yes, it is possible that the same phone can work on the part of an operator's network that has e.g. Ericsson base stations and fail on the other part that uses e.g. Huawei.
And BTW I was working as a network optimization engineer at a cellular phone company for 8 years. I don't need pointless post of "1st level support" quality.
After removing and reinsert again and again my sim card 4G 5G, it doesnt Work any more…no matter reboot or something else!
If I insert an other SIM card 4G and I insert my sim card after, it reworks. Network is returning.
the sequence is reproducible. Perhaps thé but is about à question of switch between 4G and 5G…
May it will be useful for the expected fix….
it seems intermittent but there's articles all over the internet about it right now and reddit threads with heaps of people talking about it. Something went wrong with this update and it looks like under certain conditions its ******* up phones. I haven't seen anyone talking about having successfully resolved this yet. So seems like the options are wait to see if an update comes to fix it, or head to an Apple store.
I didn't read all the replies, but I had this issue as well (iPhone 12) and I was severely annoyed as it would drop signal constantly. So here's what I did: turned off WiFi Calling.
Since I did that, it hasn't dropped signal once. Temporary fix, for sure, but at least solved it for now.
14.8 won’t fix it (if there even is a 14.8). Almost certainly a hardware problem. Click on Get Support at the top of the screen for help from Apple.
No, it's definitively a software problem with 14.7.1. I have an iPhone 7 and and a SE 1st generation here and both are on T-Mobile. Coverage at home is really good. It's about 400 yards to the antenna tower.
Both phones have the "No service" issue here since the last update. And it would be rather strange that two iPhones have a hardware failure in the baseband section at exactly the same time.
Same problem with my Iphone8 v14.8 - Telekom service. No Service after update. Card works fine in another phone - IponeSE also with v14.8. I tried out a Vodafone card in the 8 and it works perfectly. There is also no entry for Telekom service in settings - only a blank field. So I think it depends on used service. Maybe worth pursuing. Good luck and BR.
Use the Get Support link at the top of this page to contact Apple.
That sounds like a hardware problem. Use the Get Support link at the top of this page to discuss repair options with Apple.
I have the same issue on my iPhone 11 and I tried everythings from this article https://support.apple.com/en-us/HT201415.
Nothing change.
I think there is a common issue on all iPhone 11 and the issue is comming from the motherboard (3V circuit) and Apple knows that but they change only the devices which are in warranty. And that is unfair in my opinion.
"No Service" on my iPhone after iOS 14.7.1 update
