i cant remember my old phone number connected to my old apple id
I got a new phone recently and when i factory reset my old phone and tried to login to my apple id the phoen number was completely than the one i was currently using
iPhone 11, iOS 13
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Are you seeing activation lock? If yes, you'll need to (1) recover the needed password from the person that last set you device up; (2) have, or recover, your own password for the device; (3) present your original purchase receipt for a pertinent device from an authorized Apple seller with the device’s serial number on it to Apple support; or (4) have a court order instructing Apple to assist in the provision of access to a decedent’s information from the deceased person's accounts.
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If this is not your problem, see:
Get a verification code and sign in with two-factor authentication https://support.apple.com/en-us/HT204974 Below is an excerpt, but read the whole document. See the bold italics below.
“Whenever you sign in with your Apple ID on a new device or browser, you'll confirm your identity with your password plus a six-digit verification code. There are a few ways you can get a verification code. You can use the code displayed on your trusted device, get a text or phone call, or generate a code from your trusted device [see the additional information in the article].” A trusted device is an iPhone, iPad, or iPod Touch with iOS 9 and later or a Mac with OS X El Capitan and later that you've already signed into using two-factor authentication.
“If you can’t sign in, reset your password, or receive verification codes, you can request account recovery to regain access to your account. This link takes you to:
Recover your Apple ID when you can’t reset your password https://support.apple.com/en-us/HT204921which you may need to use.
Account recovery might take a few days or longer, depending on the specific account information you can provide to verify your identity. After you request account recovery, you'll get an email with a confirmation of your request and the date and time of when you can expect to regain access. … When the wait period is over, Apple sends you a text or automated phone call with instructions to regain access to your account. Follow the instructions in the above link to immediately regain access to your Apple ID.