AT&T says it now supports eSIM on the latest iPhones with the iOS 12.1.1 update, making it the first major US carrier to support Dual SIM on iPhones
Apple today officially released iOS 12.1.1 to the public, teasing in the update's release notes that it includes “eSIM …
Context & Ripple Effects
When Apple launched its 2018 iPhones, it promised eSIM activation would arrive via an update before year-end, working with Verizon, AT&T, and T-Mobile at launch (September's roadmap). By late October that promise had slipped: all three major US carriers still hadn't switched eSIM on, even as the feature worked abroad (the October delay report).
Today's iOS 12.1.1 release breaks the logjam — and AT&T, not Verizon or T-Mobile, is first out of the gate, enabling Dual SIM on the latest iPhones. The win is narrow for now: Apple shipped eSIM bug fixes just two weeks later in iOS 12.1.2, so early adopters are effectively beta-testing carrier provisioning.
First-order effects
- AT&T gets a short-lived differentiator as the only major US carrier where iPhone buyers can activate a second line without a physical SIM, while Verizon and T-Mobile are exposed for missing the 'later this year' window they had committed to.
Second-order effects
- Verizon and T-Mobile face pressure to flip their own eSIM switches within weeks rather than quarters, since Dual SIM lets customers consolidate personal and work lines on one iPhone — putting each carrier's share of second lines up for grabs.
Third-order effects
- If the pattern holds — hardware ships first, iOS updates enable eSIM, carriers race to provision — the physical SIM tray becomes vestigial in the US, shifting switching costs from a card you can pull to software profiles the carrier controls.
The trend: US carriers are being pulled from physical SIMs toward software-provisioned eSIM on Apple's update cadence, ending in eSIM-only iPhones.