Yes, there are searches for it on Google, but the phrase «Add and modify business phone number on Google Maps» itself is long and unnatural as a search query. People often search with shorter phrases like changing phone number in Google Maps and modifying phone number in Google Maps. And changing the phone number is indeed done from the business profile data on Google. All possible search phrases Strongest and most natural: Change phone number in Google Maps Change phone number in Google Maps Modify phone number in Google Maps Modify phone number in Google Maps Update phone number in Google Maps Update phone number in Google Maps Add phone number in Google Maps Add phone number for business on Google Change business mobile number on Google Modify business mobile number on Google Update business mobile number on Google Change contact number in Google Maps Modify contact number in Google Maps Add contact number in Google Maps Business owners' searches: Modify business information on Google Update business information on Google Modify business on Google Maps Update business on Google Maps Modify business profile on Google Update business profile on Google Manage business on Google Maps Modify business information on Google Change business information on Google Maps Modify company information on Google Maps Problem/Solution phrases: How to change phone number in Google Maps How to modify phone number in Google Maps Method to change phone number in Google Maps Method to modify phone number in Google Maps Method to add phone number in Google Maps How to change phone number in Google Maps How to modify phone number in Google Maps Old phone number in Google Maps Change old phone number in Google Maps Phone number not changing in Google Maps Solution for changing phone number in Google Maps Change phone number for business on Google Modify phone number for business on Google Google Business phrases: Change phone number Google Business Modify phone number Google Business Profile Update phone number Google Business Profile Add phone number Google Business Profile Change phone number Google Business profile Modify Google Business Profile data Update Google Business Profile data If your goal is an SEO service/advertisement title, the strongest phrasing I have is: Modify and Change Phone Number in Google Maps | Update Business Phone Number Because it combines multiple search intents in one title without excessive stuffing.