T-Mobile, in their iPhone 18 Pro / iPhone Duo press release:
Plus, T‑Mobile is one of the first to support Apple’s new iPhone Handoff feature, where customers with two compatible iPhone models can use their T‑Mobile number across both devices and choose which phone is active at any given time. The secondary iPhone works seamlessly, including essential T‑Mobile services like calls, texts, data, mobile hotspot, Scam Shield and T-Satellite on eligible plans, allowing customers to get the most from two devices without clunky handoffs or the hassle of managing another number. iPhone Handoff is available on any iPhone with iOS 27 via iPhone settings and ready to use from day one on the new iPhone 18 Pro lineup and iPhone Duo. T‑Mobile is introducing the feature at $5/month.
This seems like a ridiculous thing to charge for. It’s not adding a separate device to your plan, like adding a cellular iPad or even an Apple Watch. It’s just switching your active eSIM between two iPhones. You can do this for free, now, on any carrier via Settings → Cellular — but it takes a bunch of taps, confirmation on both iPhones, and a few minutes for the carrier to register the eSIM transfer. iPhone Handoff just eliminates all the annoying friction and waiting.
But, it’s utterly unsurprising that a carrier will charge a ridiculous monthly fee. I’ll be very surprised (pleasantly) if Verizon doesn’t do the same. Verizon charges for everything.
Still curious to me why AT&T isn’t yet announced as supporting iPhone Handoff at all. I have no idea why anyone remains on that turd of a network unless they live or work in a location where only AT&T provides a good signal, but even then, if it were me, I’d use AT&T by way of US Mobile. AT&T is the worst company I’ve ever dealt with, and I live in Kabletown.
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