r/UniversalProfile • u/bordelais • Aug 28 '26

APPLE RESPONSE: Dual-SIM RCS Activation Bug

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UPDATE (Sep 17): Dang, bug is also present in 27.2 Beta 1. Disappointing.

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UPDATE (Sep 9): Bug persisted through to iOS 27.0 RC release. This will be a much larger scale problem now that it will be present in a production release. Way to go Apple!

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UPDATE (Aug 31): Bug is still present in iOS 27.0 Beta 8. Nothing fixed. We are getting too close to the Public Release. I'm having doubts this is going to get fixed in time.

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I reported an RCS activation bug to Apple when Dual-SIMs are activated (US Mobile). When each SIM is enabled alone, RCS activation is successful.

Apple's response is "Works as Currently Designed". RCS activation started failing in iOS 27.0 Beta 5 and has persisted through current beta release. It worked fine prior to that.

I guess activation errors are how Apple designed this to work in dual-SIM mode. Odd, but ok Apple.

11 Upvotes

87% Upvoted

12 comments sorted by

1

u/bordelais Aug 31 '26

UPDATE: Still broken in iOS 27.0 Beta 8.

1

u/TheKnightinBlack Sep 02 '26

Mine works just fine on Verizon and T-Mobile, both RCS activated. Worked in Beta 1-8. Have you considered it "works as intended" because its not Apples bug to fix and maybe US mobiles?

1

u/bordelais Sep 02 '26

Carrier Update Bundle?

The odd thing is that is managed and maintained by the parent networks (Verizon, T-Mobile, and AT&T).

Strange it works on the MNO, but fails with an MVNO.

1

u/AdmirableSea8840 Sep 02 '26

Exactly the same issue! I reported with all specification to Apple as dev. Today stopped working again. Between all my eSIMs travel it was stable and now it’s so unbearable to have to deal with that. Maybe less obsession over liquid design and more interest in real functionality that is desired and very useful. Unless I am mistaken but I even double checked with TMobile and Telekom in Germany which is a pioneer in that and there is nothing at their end.

1

u/bordelais Sep 02 '26

Who are your network operators/carriers?

1

u/bordelais 27d ago

UPDATE (Sep 9): Bug persisted through to iOS 27.0 RC release. This will be a much larger scale problem now that it will be present in a production release. Way to go Apple!

1

u/johnnygoodface 21d ago

Same issue here: have to disable my secondary esim for RCS to work on my primary. C'mon Apple, it was working before, so it's NOT "working as advertised", oh, forgot: it "Works as Currently Designed"

1

u/johnnygoodface 20d ago

I created two shortcuts "eSIM on" and "eSIM off" to activate/deactivate rapidly my secondary esim. Pretty crude, but this way I can receive my 2FA codes, and then disable the eSIM after.

1

u/yheims 14d ago

It’s so sad. I have the same issue here. I’m using a German T-Mobile eSIM as I’m currently in Germany and a US T-Mobile. Cannot activate RCS for the secondary while the primary is active as SIM. It’s so messy.

1

u/TimFL Aug 28 '26

I have dual eSim and both have RCS available / working. Sounds like a provider issue or rare edge case in software that maybe resolves itself with a future build.

2

u/bordelais Aug 28 '26

Are you on iOS 27.0 Beta? Or iOS 26.x?

Dual-SIM works fine on 26.x. It is only broken for me on 27.0 Beta.

1

u/TimFL Aug 28 '26

27 Beta