[Home](./index.md) > [@firebase/auth-types](./auth-types.md) > [PhoneInfoOptions](./auth-types.phoneinfooptions.md) ## PhoneInfoOptions type The information required to verify the ownership of a phone number. Signature: ```typescript export type PhoneInfoOptions = | PhoneSingleFactorInfoOptions | PhoneMultiFactorEnrollInfoOptions | PhoneMultiFactorSignInInfoOptions; ``` References: [PhoneSingleFactorInfoOptions](./auth-types.phonesinglefactorinfooptions.md), [PhoneMultiFactorEnrollInfoOptions](./auth-types.phonemultifactorenrollinfooptions.md), [PhoneMultiFactorSignInInfoOptions](./auth-types.phonemultifactorsignininfooptions.md) ## Remarks The information that's required depends on whether you are doing single-factor sign-in, multi-factor enrollment or multi-factor sign-in.