iPhone users MUST allow the Garage Sale app to access Mobile Data on their devices. To do this first go to your iPhone Settings, scroll through the list of apps until you find the Garage Sales app, then tap on it to open the app permissions screen and make sure Mobile Data is set to ON. (See visual step-by-step help below)
The above requirement will ensure that you have the latest app content and updates on your phone.
IMPORTANT: if you already bookmarked (Favourite) garage sales inside the app it is recommended that you write them down before proceeding. TIP: You can also share the garage sale listings by email by tapping the share button on each sale info screen.