Some pet sitters are worried about providing their mobile number on Pawshake. SMS verification is an obligatory safety barrier for all user, so you have to complete it in order to use the Pawshake platform.
However, your number is not displayed in your profile and you are in full control about passing it on to pet parents. If you're available for an enquiry, you can include your number in the chat whenever it feels appropriate to you.
Once you have confirmed a booking, your number is shared with the pet parent automatically, since they need to be able to reach you. However, most pet sitters and parents will have exchanged phone numbers at this point already.