Apple’s iPhone Handoff lets two iPhones share the same phone number, making it possible to switch between the devices without moving an eSIM each time.
When enabled, calls, voicemail, messages and Find My location move to whichever iPhone is currently in use. Other information stored in iCloud can continue syncing normally between the two devices.
Despite the similar name, iPhone Handoff is different from Apple’s existing Handoff feature for continuing activities between an iPhone, iPad or Mac.
What you need for iPhone Handoff
Carrier availability is currently limited. Apple lists T-Mobile in the U.S. and Telekom in Germany as supported providers. Carrier fees may also apply.
Both iPhones also need to run iOS 27 or later and must:
- Be connected to Wi-Fi.
- Use the same Apple Account.
- Have Messages in iCloud enabled.
- Be signed into iMessage and FaceTime with the same Apple Account.
- Use an eligible eSIM from a supported carrier.
Setting up iPhone Handoff
You can enable iPhone Handoff while setting up a new iPhone or add it later through Settings. To set it up on iPhones you are already using, place both devices nearby and then:
- Open Settings >> Cellular on the iPhone you want to add.
- Tap “Set Up Cellular” or “Add eSIM.”
- Select “Use Number on This iPhone and Another” and follow the prompts to choose which device will be your main iPhone.
Complete the remaining instructions on both phones. The main iPhone should generally be the device you use most often. Apple says some carrier features, including certain call forwarding, Caller ID and account-management settings, can only be managed from that device.
If you’re activating iPhone Handoff while setting up a new iPhone, the option appears during cellular setup instead.
How to switch between your iPhones
Once iPhone Handoff is configured, there is no separate transfer process each time you change devices.
Simply unlock the iPhone you want to use. Your phone number becomes active on that device, and a “Switched to this iPhone” message confirms the change.
Only one iPhone can have the shared number active at a time. Apple recommends keeping a passcode enabled so another person cannot activate the number simply by unlocking the other phone.
Messages, including iMessage, RCS and SMS/MMS, can follow the active device. Third-party apps may behave differently depending on how they handle syncing and authentication. Banking and other security-sensitive apps, for example, may ask users to approve the second iPhone separately.
Apple Watch does not auto switch
An Apple Watch remains paired with its existing iPhone when the phone number moves.
Apple recommends pairing the watch with whichever iPhone you expect to use most frequently. A cellular Apple Watch can continue working independently where supported, but some features may be unavailable if it cannot communicate with its paired iPhone.
Wallet also has some limitations. Payment cards can be added to both devices, while some IDs, transit passes and corporate badges may only work on one iPhone at a time.
iPhone Handoff can also work with Dual SIM, provided both eSIMs are from carriers that support the feature. Each number must be configured for iPhone Handoff separately. After setup, both lines move to the other iPhone together when the user switches devices.
How to turn off iPhone Handoff
Disabling the feature requires contacting your carrier.
Apple warns that simply deleting the eSIM from an iPhone may not cancel the associated service or charges. Users who no longer want iPhone Handoff should contact their carrier and request that the service be turned off.
For people who regularly alternate between two iPhones, iPhone Handoff removes the need to maintain separate phone numbers or repeatedly transfer an eSIM. The main limitation for now is carrier support, particularly in the U.S., where Apple currently lists only T-Mobile.
Leave a Reply