If you got a new mobile plan with a new SIM card for your iPhone, you might wonder whether you can still use your old Apple ID.
Is your Apple ID tied to your iPhone’s SIM card?
Here’s Whether Apple ID Is Tied To SIM Card:
Apple ID is not tied to an iPhone’s SIM card. It is only tied to your email account. So you can use the same Apple ID with a different SIM card on your iPhone.

Can You Use The Same Apple ID With A Different SIM Card?
Your Apple ID is not tied to your iPhone’s SIM card. Apple ID is like a Google account; it is only tied to the email address you sign up with.
So you can use the same Apple ID with a different SIM card on your iPhone.
Do You Need Your Apple ID To Put Your SIM Card In Another Phone?
You don’t need your Apple ID to put your iPhone’s SIM card into another phone.
As we explained before, Apple ID is not tied to your SIM card, and your SIM card is not locked to an Apple ID.
So you can put your iPhone’s SIM card on another iPhone or Android phone without using your Apple ID.
Will You Lose Your iCloud Data If You Replace Your iPhone’s SIM Card?
You won’t lose your iCloud data when you replace your iPhone’s SIM card.
Your iCloud data is not tied to or stored on your SIM card. iCloud stores your data on cloud storage servers.
iCloud only needs your Apple ID, and Apple ID is independent of your SIM card.
So you won’t lose your photos, music, videos, and other files on iCloud when you replace your iPhone’s SIM.
Are Your iPhone’s eSIM Plans Tied To Your Apple ID?
Your iPhone’s eSIM plans are not tied to your Apple ID.
eSIMs are just like physical SIMs; the only difference is the virtual nature of eSIMs.
Therefore, like with physical SIMs, you can use your eSIM plans with a different Apple ID without any issues.
Conclusion
Your Apple ID is not tied to your iPhone’s SIM card. So you can use the same Apple ID with a different SIM card on your iPhone.
You can also put your iPhone’s SIM card on another iPhone or Android phone without using your Apple ID.
Similar to physical SIM cards, your new iPhone’s eSIM plans are not tied to your Apple ID.