User level: Level 1 (5 points)iPhone 13 Pro Max and IOS 27 bugs Cellular Datas after installation
I noticed that my iPhone 13 Pro Max did automatically connect to my iPhone 15 Pro Max. Then, it went on downloading System Services.
iPhone 13 first finished all the its datas available. Then, it did the same from the IPhone 15.
Even when I deactivated automatic connection, still it succeed to do it without me being aware of it. Auto connection reactivate automatically.
Is my explications clears enough ?
[Edited by Moderator]
Posted on Sep 30, 2026 8:59 AM
User level: Level 10 (93,009 points)Sep 30, 2026 10:58 AM in response to hodarikah
Did you know that there is also a French speaking Apple Community?
You might get more answers in these forums from native speakers.
Saviez-vous qu'il existe également une communauté Apple francophone ?
Vous pourriez obtenir davantage de réponses de la part de locuteurs natifs sur ces forums.
Communauté d’assistance Apple officielle
If I understand that correctly, your iPhone 13 used the Personal Hotspot of your iPhone 15 without you noticing that.
Did you check, if the Personal Hotspot has been enabled on your iPhone 15?
Connect to the Personal Hotspot of an iPhone or iPad - Apple Support
Se connecter au partage de connexion d’un iPhone ou d’un iPad - Assistance Apple (FR)
...
When using Instant Hotspot to connect to your Personal Hotspot, the "Allow Others to Join" setting doesn’t need to be turned on, and you and members of your family group can connect to your Personal Hotspot without being asked to enter its password.
...
Use Instant Hotspot to connect to your Personal Hotspot - Apple Support
Utiliser Instant Hotspot pour vous connecter à votre partage de connexion - Assistance Apple (FR)
User level: Level 1 (5 points)Sep 30, 2026 11:39 PM in response to Ingo2711
iPhone 13 Pro Max cellular data issues af… - Apple Community
Thanks for that information. I will also try to share the problem there.
As you can see, Personal Hotspot is disabled. Still, iPhone 13 still connects itself. Now, if I don’t forget, I disconnect cellular data on both phones.
As you can see in this picture, I forgot to turn cellular data off. During the night, 5 Go were used. All were use for System Services. I only see that on the iPhone 13 Pro Max since the installation of IOS 27.
Is what you can see in the details normal ?
Originally posted at discussions.apple.com/thread/256367913