Hi everyone,
does anyone going through dual sim network issues after iOS 27 update. Everything was working perfectly before update but when I updated my phone to iOS 27 days ago straight away I started getting network problems. I have force restarted the phone, reset the network settings and did everything possible but nothing works.
iPhone 14 Pro, iOS 27
What you describe points to a network/modem-related problem rather than simply an iOS update.
Possible causes include:
A useful diagnostic test: try these one at a time:
If the phone becomes noticeably hot at the same moment the cellular connection disappears, especially if this happens repeatedly regardless of location or carrier, I would have Apple run hardware diagnostics rather than treating it simply as an app or battery issue.
I am also facing the same issue. Mobile data doesn’t work with dual sim active. It works only if I disable one the sims. Tried everything including reset all settings and delete the old ones. Nothing worked. Having 14 pro max
My 5g not working. 5G Is worked in my phone before I Update to iOS 27. First of all I think maybe there is a 5g maintenance wrok in my area. But when I cross check Other devices with same provider They use 5G with no Trouble. Even when I check my Sim Card In Another phone 5G network Work perfectly. I am facing the problem from across one week. Please fix it. But this Problem only happen in my area, When I go to the main Road, then the 5G work perfectly.
thanks a lot. It worked for me too. But unnecessarily after doing factory reset and deleting all settings. Also lost my whats app data in the same. Wish would have seen your message earlier.
Thanks again
This is simply IOS issue, since SIM working well with other phone. Why mentioning carrier issue?
I tested both SIM other phone and it’s working perfectly fine. Accept when active both SIM at the same time, issue will persist. When disable one SIM and it just working fine for other.
how to called if it not IOS issue?
IOS should fine the resolution for version 27, since this is very annoying.
Hi Pratik,
Have you got a solution?
Even I’m facing the sane issue since 13th October.
Like you, I’m also using a Jio eSIM and an Airtel physical SIM. All the diagnostic tests show no issues, but the problem persists.
I even visited the service centre yesterday, they also didn’t not get any solution.
Same issue, started right after the upgrade to iOS27, my carriers don't see any issue in their end, so I guess it must be iOS.
I got two carriers in my iphone ... Vodafone and Telekom ... i use new ESims of both carriers ...
There is actually no update available from carriers ...
I have the same issue with eSIM orange after update problème de connection of cellular data lent and stop all time
my networks keeps refreshing and the internet doesn’t work. Idk how I’m supposed to work now
Even i am the one facing these problem and
Since I installed the 27.0 update on my iPhone 14 Pro, I can’t make or receive calls with my SIM card.
same problem here too: AT&T and iphone 17 everything was fine until ios27 update. Internet comes and go and can't make any phone call.
I’m also facing the exact same issue in my iPhone 15 plus post ios 27 update. Can anyone give us a temporary work around?
Yes. Same issue with my device as well.
The strange thing is also that an iPhone 18 Pro Max with iOS 27 has all these issues, but an iPhone 12 Pro with iOS 27 and also dual SIM configuration with same carriers has no issues at all.
iOS 27 update mobile network issues
