Can't cancel AppleOne subscription because I have no access to the related iPhone.

Read about how to do this online. Sign into the account with a web browser and cancel it there. This support article explains how to cancel a subscription from Apple on an Apple mobile device, Mac, PC, and online ➔ If you want to cancel a subscription from Apple - Apple Support , or this video will only tell you how to do it on an iPhone ➔ https://www.youtube.com/watch/XXx-J-ueCtE

Notes:

• You might need to scroll down to find the Cancel Subscription button.

• If you don’t see Cancel Subscription, then the subscription is already canceled and won't renew. An "Expires" date (instead of "Renews") means the current subscription will just run until then. "Resubscribe" is just in case you change your mind about having it end.

• Deleting an app does not cancel a subscription.

• If you don’t cancel trials more than 24 hours before your renewal date, your subscription might renew.

• If you don't have an Apple device, see the options near the bottom of the support document.

• Many subscriptions are set to renew automatically until you intentionally cancel them.

If you can’t find the subscription that you want to cancel, use this shortcut to jump to the section about what to do. --> If you want to cancel a subscription from Apple - Apple Support If you still can't find a subscription, contact Apple Support using this issue-specific link at the end of the section. --> https://getsupport.apple.com/?caller=kbase&PGF=PGF63006&category_id=SC0060&symptom_id=23208

If you still have problems, contact Apple online using this page ➔ Choose your country or region - Official Apple Support Select your country, then a product. Alternatively, see a list of Apple phone numbers around the world ➔ Contact Apple for support and service - Apple Support

Apple is using two factor to make sure you are the account owner. To do this the standard way means to regain access to the account. If you cannot get access to the account then you can contact Apple. However, they will still need some proof you are the true account owner.

Account Recovery is used to regain access to an account.

If you find you can’t sign in, reset your password, or receive verification codes, you can request account recovery (go to this document: How to use account recovery when you can’t reset your Apple ID password - Apple Support ) to regain access to your account. Account recovery might take a few days or longer, depending on the specific account information you can provide to verify your identity.

This article provides country-specific Apple Support contact information for customers seeking help with their Apple ID password or other security-related issues. ➞ Contact Apple for help with Apple ID account security - Apple Support