Cannot log in to iCloud from iOS 10.3.3

hello,

downloading this certificate did solve the Problem for me.

https://www.apple.com/certificateauthority/AppleISTCA2G1.cer

[This is a Direct Download Link]

Hi I just had an hour long talking with one of the Apple specialists regarding this issue and they now ask me to do a full restore for the iPhone from My computer, they are still not fully convinced this is their system glitch, so for anyone is having the same issue, can you please try restoring the iPhone on the computer if possible with me as well? So I can share the information with them and hopefully in the Followup of this incident they can be convinced this is a system glitch and not our devices issue, then proceed to engineer to come up with a solution. Thank you very much!

Hi, I experience the same issue, iPhone 5 (iOS 10.3.4). I got a Verification failed message when I tried to access my iCloud account few days ago. I have to mention that I can access my account from my MacBook just fine. Resetting the phone to its factory settings and setting it up as a new device didn't solve it. Nor did restoring it via iTunes including reinstalling the OS. When I try to log in for the first time I receive the verification code on my Mac, then I get the message "Verification failed: There was an error connecting to iCloud". The strange thing is that my iPhone is added to the devices list in my iCloud, but on the phone itself I can't get past the error message. Removing the phone from the devices list doesn't change anything. Any ideas?

I am having the same issues started sometime last week, ~4/12 or so for me. I am not sure what the issues is - I tried everyone recommended solution and still nothing. My iphone 5c can connect to itunes using the same credentials as iCloud.

Same here with this issue for almost a week now, another topic is on this issue also,

iCloud service was disabled for iOS10.3.3… - Apple Community

Yes, there are some peoples having same issue including me. (iPhone 5, 10.3.4)

[Link Edited by Moderator]

Same problem! At least I know its a global problem now and I can stop trying to reset my ipad. Been on a couple of forums but no solution to the problem. Hopefully we will get an answer!

Same and I got this Issue when came back from Pittsburgh last weekend on my iPhone 6S with 10.3.3 and I hope they will fix this very soon.

Just downloaded and all working ok.

Very grateful and relieved!!!

That was the solution for me too on my iPad 10.3.3 and my MacBookPro early 2011 Sierra as other OS’ses are also affected.

However, this certificate is only valid until May 22…

I hope they will renew it after May 22nd 2022!!!

It worked on my iPad MD511BZ/A with iOS 10.3.3.

Thanks for the help.