Initiates the phone number verification flow, including user consent and token generation. A consent dialog will be presented to the user.
The verified phone number and a JWT token with full claims for server-side validation.
The app should prepare the user for the consent screen before calling this method.
pnv/carrier-not-supported if the carrier does not support PNV.
pnv/carrier-not-supported
pnv/activity-context-required if no foreground Activity is available.
pnv/activity-context-required
https://firebase.google.com/docs/phone-number-verification/android/get-started
Initiates the phone number verification flow, including user consent and token generation. A consent dialog will be presented to the user.