Apple is introducing iPhone Handoff with iOS 27, allowing users to share one phone number between two iPhones and switch between them simply by unlocking the device they want to use.
In the United States, however, that convenience comes at a price. T-Mobile will charge $5 per month for Apple’s new iPhone Handoff feature, raising an obvious question: who actually needs two iPhones sharing the same number, and is the feature worth paying $60 a year for?
The easiest way to understand iPhone Handoff is to think of having two different iPhones for different situations without maintaining two separate phone numbers. Apple says calls, voicemail, iMessage, RCS, SMS/MMS messages and Find My location automatically move to whichever iPhone is being used.
What is the point of iPhone Handoff?
Once Handoff is configured, unlocking the iPhone you want to use makes your phone number active on that device. Only one iPhone has the number active at a time, while information stored through iCloud continues syncing between the two devices.
The appeal becomes clearer when the phones serve different purposes. Someone might keep a large flagship as their everyday device but take a smaller or older iPhone to the gym, on a run, to the beach or somewhere they would rather not risk damaging their most expensive phone.
It could become particularly relevant with Apple’s increasingly varied iPhone lineup. Someone using iPhone Duo as their main device, for example, might prefer a conventional iPhone for certain situations. Apple itself describes Handoff as a way to move between devices optimized for different moments, including separate weekday and weekend phones.
Rather than transferring an eSIM every time, both devices effectively become different ways of accessing the same mobile identity.
Is iPhone Handoff worth $5 per month?
For most iPhone owners, probably not. The feature solves a fairly specific problem: owning and regularly using two iPhones. Someone with one primary iPhone and an old handset sitting unused in a drawer gains very little from paying another $60 each year.
For people who genuinely alternate between two phones, however, $5 per month is much easier to justify. The secondary device can be used away from the primary iPhone, making Handoff considerably more useful than simply relaying calls to another nearby Apple device.
There is also the convenience factor. Apple says users simply unlock the iPhone they want to use and the phone number automatically becomes active on it, avoiding the need to repeatedly move an eSIM between devices.
There are some limitations
iPhone Handoff is not quite the equivalent of having two completely interchangeable phones. Apple requires both devices to run iOS 27 or later, use the same Apple Account, have Messages in iCloud enabled and use an eSIM from a supported carrier.
At launch, carrier support is limited. Apple says T-Mobile supports iPhone Handoff in the United States, while Telekom supports it in Germany.
An Apple Watch also remains paired with one iPhone rather than automatically moving to whichever Handoff device is active. Apple recommends pairing the watch with the iPhone used most frequently.
Third-party apps can behave differently too. Some will synchronize automatically, while others may require another sign-in or authentication on the secondary device. Apple specifically notes that banking apps may require users to approve access before the second iPhone is authenticated.
Apple also warns that simply deleting the eSIM does not necessarily cancel the Handoff service. Customers need to contact their carrier to turn it off, otherwise carrier charges may continue.
A niche feature that could make more sense with iPhone Duo
iPhone Handoff is not designed to convince everyone to start carrying two phones. Its value is really for the smaller group of customers who already own multiple iPhones or can genuinely see themselves switching between them regularly.
For those users, $5 a month to remove the hassle of a second number or repeatedly transferring cellular service could be worthwhile. For everybody else, it is likely to remain an interesting iOS 27 feature they never need to activate.
The arrival of iPhone Duo alongside Apple’s conventional iPhone models does make the concept more interesting. Apple now has iPhones suited to substantially different use cases, giving Handoff a clearer purpose than simply carrying two versions of essentially the same device.