Apple’s new iPhone Handoff feature sounds simple on paper. Run the same phone number across two iPhones, and whichever one you pick up becomes the active line. In practice, it only works if your carrier signs off first, and right now almost none of them have.
Apple’s support documentation confirms that iPhone Handoff requires explicit carrier support before it can be turned on, and that carrier fees might apply once you enroll. T-Mobile is the first to confirm what that fee looks like.
iPhone Handoff works by designating one iPhone as the main device and the other as the secondary device. When you unlock whichever phone you’re holding, the number activates on that device automatically.
Setup requires both iPhones to run iOS 27 or later, connect to Wi-Fi, and sign into the same Apple Account with FaceTime, iMessage, and Messages in iCloud all enabled.
Customers who want to stop using iPhone Handoff need to contact their carrier directly to cancel it. Deleting the eSIM from the phone doesn’t cancel the underlying carrier service, so the charge can keep showing up on the bill.
T-Mobile Charges $5 a Month for iPhone Handoff
T-Mobile will charge U.S. customers an extra $5 per month to use iPhone Handoff. That works out to $60 a year on top of an existing plan to keep one phone number synced across two devices.
The fee covers full access to the account’s core services on the secondary iPhone.
- Calls and text messages
- Cellular data
- Mobile hotspot
- Scam Shield
- T-Satellite, on eligible plans
Deutsche Telekom Skips a Standalone Fee
Germany’s Deutsche Telekom is the only other carrier supporting iPhone Handoff at launch, and it bills for it differently. There’s no separate charge tied to the feature itself.
Instead, iPhone Handoff runs through Deutsche Telekom’s existing MultiSIM add-on, which costs €6.95 per month on its own. Select plans already include a MultiSIM at no extra cost, which means some customers get iPhone Handoff for free while T-Mobile customers pay $60 a year for the same functionality.
Verizon and EE Plan to Add Support by Year End
Apple has confirmed that Verizon and EE will bring iPhone Handoff support before the end of 2026, with more carriers expected to follow after that. Neither has said whether they’ll charge a fee similar to T-Mobile’s.
Notably absent from Apple’s initial carrier list are any Japanese carriers, which suggests the feature’s international rollout will take longer than its U.S. and European debut.
Our Take
I think the $5 monthly fee tells you more about how carriers plan to treat every new Apple software feature going forward than it does about iPhone Handoff specifically. Apple built the entire technical framework into iOS 27 at no cost, and T-Mobile found a way to charge for flipping the switch on it anyway.
My guess is Verizon follows with a similar fee once it adds support later this year, since there’s no competitive pressure pushing carriers toward free access. Deutsche Telekom’s approach, bundling it into an add-on that’s already free on select plans, is the model I’d want other carriers to copy, but I doubt they will.
