I lost my number for Two-factor-authentication

Hello amir,

I am not clear as to what number you mean.

If you mean a recovery key, see this article: How to generate a recovery key - Apple Support

If you mean you are having problems getting a verification code, read the articles 'Two-factor authentication for Apple ID' ( Two-factor authentication for Apple ID - Apple Support ) and 'Get a verification code and sign in with two-factor authentication' ( Get a verification code and sign in with two-factor authentication - Apple Support ). Various sections contain information that is useful in understanding about the trusted devices (an iPhone, iPad, or Mac that Apple knows is yours) system, and how to get a verification code on a trusted device or at a telephone number.

You can look into adding more ways to get a code such as multiple telephone numbers where you can receive a text or a phone call. The document Check your Apple ID device list to find where you're signed in - Apple Support tells you how to do this.

If you had set up an Account Recovery Contact ( Set up an account recovery contact - Apple Support ) you can get a code that way.

If you can’t sign in, access a trusted device, reset your password, or receive verification codes, you can request account recovery to regain access to your account. This article explains how to recover your Apple ID after a waiting period - How to use account recovery when you can’t reset your Apple ID password - Apple Support