Change back Apple ID primary email
Hi folks. A couple years ago, I changed my Apple ID's primary email address from my gmail email to my yahoo email. I basically registered my new yahoo email as an additional email in my Apple account, then made it "primary". But now I want to move BACK to gmail (make my gmail my "primary" email on my Apple account). However, when I try to change my Apple ID's primary email address back from my yahoo email to my gmail, I am getting the error:
"Email Used by Another Apple ID. This email address is not available. Choose a different address."
(Specifically, I did this: iPhone Settings > Apple ID > Sign-In & Security > Email & Phone Numbers > Edit > delete the primary email (yahoo) > "Choose Another Email Address" > specify my gmail email > got the error.)
Both email addrs are registered in my iPhone settings (iPhone Settings > Apple ID > Sign-In & Security > Email & Phone Numbers). Currently Yahoo is the primary addr, eg, the phrase "Apple ID" appears under it. My gmail addr is further down the list.
To be clear, I have had control of both email addresses this whole time, and I have had only 1 Apple ID this whole time. It's not like I am trying to merge 2 Apple IDs. Indeed, I verified that I can currently log into my Apple ID using EITHER my yahoo email OR my gmail email. But I need the gmail account to be "primary".
Any ideas? Thanks in advance!