Fadehaus is a barbershop booking app. Users sign in with their mobile number. On the phone-entry screen (below), before requesting a code, the user sees an explicit consent notice and taps Send code to request a one-time verification passcode by SMS. Codes are sent only upon the user's explicit request; the messages are transactional (verification) only, with no marketing.
Consent language shown on the screen: “By tapping Send code, you agree to receive a one-time verification code from Fadehaus by SMS. Message and data rates may apply. Messages are transactional only, one per request. Reply STOP to opt out, HELP for help.” with a tappable Privacy Policy link (fadehaus.com/privacy-policy).
Sample message: “Your Fadehaus verification code is 458213. It expires in 10 minutes. Reply STOP to opt out, HELP for help.”