No trusted device
borrowed phone, trying to sign into iCloud but “trusted device”
is broken so I can’t get the code
iPhone 15 Pro, iOS 17
Question marked as
Do you have a trusted phone number? That can be any phone including Androids or landlines. If so you can request a code be sent to it. See: Get a verification code and sign in with two-factor authentication - Apple Support
If you don't have access to any trusted devices or trusted phone numbers, see the following from that same support article:
If you can’t sign in, reset your password, or receive verification codes, you can request account recovery 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.