Share Apple Watch cellular number with an old iPhone?

My daughter has an Apple Watch (GPS + cellular). She does not have a phone. Can I share the number to an old iPhone? My goal is for her to be able to use both devices with the same number.

Posted on Jul 13, 2026 5:40 AM

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Question marked as Top-ranking reply

Posted on Jul 13, 2026 8:24 AM

I assume your daughter is on the Apple Watch Family Plan, with your or your spouse's iPhone controlling your Daughter's Apple Watch.


What you would need to do is discontinue the Apple Watch Family Plan, and pair the Apple Watch to an iPhone.


HOWEVER ‼️, The iPhone MUST be running a new enough iOS version that is capable of pairing to the Apple Watch. This is VERY IMPORTANT‼️


And then you need to get a cellular plan for the iPhone that supports the Apple Watch. Not all carriers support the Apple Watch

Apple Watch - Carriers - Apple


But definitely do your research on compatible iOS and watchOS versions, or you may be backdoor forced into buying a new iPhone for your daughter 💸

2 replies
Question marked as Top-ranking reply

Jul 13, 2026 8:24 AM in response to justcuriousaboutitall

I assume your daughter is on the Apple Watch Family Plan, with your or your spouse's iPhone controlling your Daughter's Apple Watch.


What you would need to do is discontinue the Apple Watch Family Plan, and pair the Apple Watch to an iPhone.


HOWEVER ‼️, The iPhone MUST be running a new enough iOS version that is capable of pairing to the Apple Watch. This is VERY IMPORTANT‼️


And then you need to get a cellular plan for the iPhone that supports the Apple Watch. Not all carriers support the Apple Watch

Apple Watch - Carriers - Apple


But definitely do your research on compatible iOS and watchOS versions, or you may be backdoor forced into buying a new iPhone for your daughter 💸

Share Apple Watch cellular number with an old iPhone?

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