Apple’s upcoming foldable iPhone just became more interesting for a reason that has less to do with hardware and more to do with how people may actually use it.
A newly demonstrated iOS 27 feature called “iPhone Handoff” will let users switch between two iPhones while keeping the same phone number, using a main eSIM on one iPhone and a companion eSIM on another. Apple briefly referenced the feature at WWDC 2026, but a new demonstration through Xcode 27’s Device Hub has now revealed how it works in practice.
At the same time, accessory maker MagBak has listed a case for Apple’s still-unannounced foldable iPhone, offering another clue that the book-style hardware design may now be largely finalized.
Together, the two developments provide a clearer picture of how Apple may position its first foldable iPhone.
iPhone Handoff Lets Two iPhones Share One Number
The newly demonstrated iOS 27 setup allows users to designate one device as their main iPhone and another as a companion iPhone.
The main device retains the primary eSIM, while the second iPhone receives a companion eSIM. Users can then move their active phone service between the two devices without repeatedly transferring their number. Cellular settings remain controlled from the primary phone.
This is significantly different from Apple’s traditional Handoff feature, which simply lets users continue apps and tasks across Apple devices.
The new feature is specifically focused on cellular service.
Why This Makes So Much Sense for the Foldable iPhone
The timing is particularly interesting.
Apple is widely expected to unveil its first foldable iPhone alongside the iPhone 18 Pro and iPhone 18 Pro Max. Reports have suggested that the foldable could cost more than $2,000, making it a premium device that some users may not want to carry everywhere.
iPhone Handoff could solve that problem.
Someone could theoretically use the foldable iPhone as their main device during work, travel, entertainment or multitasking, then switch to a smaller conventional iPhone when heading to the gym, going outdoors or simply wanting something lighter.
The Verge specifically notes that the timing of iPhone Handoff makes sense with Apple’s foldable iPhone launch approaching.
There Is One Important Limitation: Carrier Support
iPhone Handoff will apparently require participating carriers.
Code references currently point to T-Mobile in the United States and Deutsche Telekom in Germany, although broader carrier availability has not yet been announced.
That means AT&T, Verizon and other networks may or may not support the feature immediately.
Apple has not yet published a final carrier compatibility list.
New MagBak Case Listing Adds More Evidence for Foldable Design
A second noteworthy development arrived on September 6.
Accessory company MagBak has listed an $89 MagBak Elite case for an “iPhone Fold,” despite Apple not having officially announced such a device. The listing depicts a two-piece case designed for a book-style folding phone.
The case shows:
- a horizontal dual-camera opening
- MagSafe/Qi2 compatibility
- a side-mounted button arrangement
- a two-piece foldable construction
- a built-in kickstand and finger loop
The listing’s page title reportedly even refers to an “iPhone Fold Ultra,” combining two of the names that have circulated in recent rumors.
Does This Confirm the Name “iPhone Fold”?
No.
This should still be considered a credible accessory leak rather than confirmation from Apple.
Case manufacturers routinely build accessories based on dimensions supplied through manufacturing and accessory channels, but product names can remain placeholders until launch.
Current reporting has used several possible names, including:
- iPhone Fold
- iPhone Ultra
- iPhone Fold Ultra
Apple could still use something completely different.
The Case Design Matches Earlier Leaks
What makes the MagBak listing more interesting is how closely its design matches earlier foldable iPhone leaks.
Previous reports and accessory renders have repeatedly pointed to:
- approximately a 5.5-inch outer screen
- approximately a 7.8-inch inner display
- book-style folding
- dual rear cameras
- Touch ID instead of Face ID
- extremely thin construction when unfolded
Multiple independent accessory designs converging on the same layout suggests that Apple’s physical design may now be close to production-ready.
MagSafe Also Looks Increasingly Likely
The MagBak case includes support for MagSafe and Qi2 charging, which aligns with recent comments attributed to Bloomberg’s Mark Gurman.
Gurman said indications he had heard suggested MagSafe was expected to be included on Apple’s foldable phone, despite the device’s extremely thin body.
MacRumors
That is another useful piece of corroboration.
What Is Confirmed vs. Rumored?
Confirmed / Strongly Supported
Apple has included iPhone Handoff functionality in iOS 27 development, allowing two iPhones to use the same phone number through a main and companion setup.
iOS 27 is expected later this month.
Credible Rumors
Apple is expected to unveil a foldable iPhone alongside the iPhone 18 Pro generation.
The foldable is widely reported to use a roughly 5.5-inch exterior display and 7.8-inch interior screen, with Touch ID and a premium price exceeding $2,000.
MagSafe support is also looking increasingly likely.
Still Speculative
The final product name remains unknown.
The MagBak case listing should not be taken as confirmation that Apple will call the device “iPhone Fold.”
Carrier availability for iPhone Handoff is also not yet finalized.
Final Thoughts
The biggest new development is not simply another specification leak.
iPhone Handoff may reveal how Apple expects customers to live with a $2,000+ foldable iPhone.
Instead of forcing buyers to choose between their foldable and a smaller iPhone, Apple appears to be creating an ecosystem where both devices can share the same number and be swapped depending on the situation.
Meanwhile, MagBak’s early case listing adds another piece of evidence that Apple’s foldable hardware design is nearing its final form.
With Apple’s September event only days away, the software and accessory leaks are now beginning to tell the same story: Apple’s foldable iPhone looks increasingly close to launch.