diff --git a/BusinessCard/Models/ContactField.swift b/BusinessCard/Models/ContactField.swift
index 388d48f..27f30ef 100644
--- a/BusinessCard/Models/ContactField.swift
+++ b/BusinessCard/Models/ContactField.swift
@@ -51,6 +51,14 @@ final class ContactField {
         fieldType?.displayName ?? typeId
     }
     
+    /// Formatted display value using the field type's formatter
+    /// For addresses, this returns a multi-line formatted string
+    /// For other fields, returns the value as-is
+    @MainActor
+    var displayValue: String {
+        fieldType?.formattedDisplayValue(value) ?? value
+    }
+    
     /// Returns an Image view for this field's icon
     @MainActor
     func iconImage() -> Image {
diff --git a/BusinessCard/Models/ContactFieldType.swift b/BusinessCard/Models/ContactFieldType.swift
index 0bbc852..284e4ae 100644
--- a/BusinessCard/Models/ContactFieldType.swift
+++ b/BusinessCard/Models/ContactFieldType.swift
@@ -39,6 +39,7 @@ struct ContactFieldType: Identifiable, Hashable, Sendable {
     let keyboardType: UIKeyboardType
     let autocapitalization: TextInputAutocapitalization
     let urlBuilder: @Sendable (String) -> URL?
+    let displayValueFormatter: @Sendable (String) -> String
     
     init(
         id: String,
@@ -52,7 +53,8 @@ struct ContactFieldType: Identifiable, Hashable, Sendable {
         titleSuggestions: [String],
         keyboardType: UIKeyboardType,
         autocapitalization: TextInputAutocapitalization = .never,
-        urlBuilder: @escaping @Sendable (String) -> URL?
+        urlBuilder: @escaping @Sendable (String) -> URL?,
+        displayValueFormatter: @escaping @Sendable (String) -> String = { $0 }
     ) {
         self.id = id
         self.displayName = displayName
@@ -66,6 +68,7 @@ struct ContactFieldType: Identifiable, Hashable, Sendable {
         self.keyboardType = keyboardType
         self.autocapitalization = autocapitalization
         self.urlBuilder = urlBuilder
+        self.displayValueFormatter = displayValueFormatter
     }
     
     /// Returns an Image view for this field type's icon
@@ -93,6 +96,13 @@ struct ContactFieldType: Identifiable, Hashable, Sendable {
     func buildURL(value: String) -> URL? {
         urlBuilder(value)
     }
+    
+    // MARK: - Display Value Formatting
+    
+    /// Returns a formatted display value for the given raw value
+    func formattedDisplayValue(_ value: String) -> String {
+        displayValueFormatter(value)
+    }
 }
 
 // MARK: - All Field Types
@@ -183,7 +193,8 @@ extension ContactFieldType {
         urlBuilder: { value in
             let encoded = value.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed) ?? value
             return URL(string: "maps://?q=\(encoded)")
-        }
+        },
+        displayValueFormatter: formatAddressForDisplay
     )
     
     // MARK: - Social Media
@@ -641,6 +652,26 @@ extension ContactFieldType {
     )
 }
 
+// MARK: - Display Value Formatters
+
+/// Formats an address for multi-line display
+/// Splits on commas and puts each component on a new line
+nonisolated private func formatAddressForDisplay(_ value: String) -> String {
+    let trimmed = value.trimmingCharacters(in: .whitespacesAndNewlines)
+    guard !trimmed.isEmpty else { return value }
+    
+    // Split by comma, trim each component, and join with newlines
+    let components = trimmed
+        .split(separator: ",")
+        .map { $0.trimmingCharacters(in: .whitespaces) }
+        .filter { !$0.isEmpty }
+    
+    // If only one component, return as-is
+    guard components.count > 1 else { return trimmed }
+    
+    return components.joined(separator: "\n")
+}
+
 // MARK: - URL Helper Functions
 
 nonisolated private func buildWebURL(_ value: String) -> URL? {
diff --git a/BusinessCard/Resources/Localizable.xcstrings b/BusinessCard/Resources/Localizable.xcstrings
index 20a0dfd..67ddafd 100644
--- a/BusinessCard/Resources/Localizable.xcstrings
+++ b/BusinessCard/Resources/Localizable.xcstrings
@@ -606,6 +606,9 @@
           }
         }
       }
+    },
+    "The default card is used for sharing and widgets." : {
+
     },
     "This doesn't appear to be a business card QR code." : {
 
diff --git a/BusinessCard/Views/CardEditorView.swift b/BusinessCard/Views/CardEditorView.swift
index 4965b9e..cde71ac 100644
--- a/BusinessCard/Views/CardEditorView.swift
+++ b/BusinessCard/Views/CardEditorView.swift
@@ -44,6 +44,9 @@ struct CardEditorView: View {
     @State private var coverPhotoData: Data?
     @State private var logoData: Data?
     
+    // Default card
+    @State private var isDefault = false
+    
     // Photo editor state - just one variable!
     @State private var editingImageType: ImageType?
     
@@ -106,6 +109,15 @@ struct CardEditorView: View {
     var body: some View {
         NavigationStack {
             Form {
+                // Default card toggle
+                Section {
+                    Toggle(isOn: $isDefault) {
+                        Label(String.localized("Default Card"), systemImage: "checkmark.seal.fill")
+                    }
+                } footer: {
+                    Text("The default card is used for sharing and widgets.")
+                }
+                
                 // Card Style section
                 Section {
                     CardStylePicker(selectedTheme: $selectedTheme)
@@ -651,6 +663,7 @@ private extension CardEditorView {
         bio = card.bio
         accreditations = card.accreditations
         avatarSystemName = card.avatarSystemName
+        isDefault = card.isDefault
         
         // Load contact fields from the array
         contactFields = card.orderedContactFields.compactMap { $0.toAddedContactField() }
@@ -693,9 +706,19 @@ private extension CardEditorView {
         if let existingCard = card {
             updateCard(existingCard)
             onSave(existingCard)
+            
+            // Handle default card toggle
+            if isDefault {
+                appState.cardStore.setDefaultCard(existingCard)
+            }
         } else {
             let newCard = createCard()
             onSave(newCard)
+            
+            // Handle default card toggle for new cards
+            if isDefault {
+                appState.cardStore.setDefaultCard(newCard)
+            }
         }
         dismiss()
     }
diff --git a/BusinessCard/Views/CardsHomeView.swift b/BusinessCard/Views/CardsHomeView.swift
index 2d8c57f..5982afe 100644
--- a/BusinessCard/Views/CardsHomeView.swift
+++ b/BusinessCard/Views/CardsHomeView.swift
@@ -27,12 +27,8 @@ struct CardsHomeView: View {
                     // Full-screen swipeable cards
                     TabView(selection: $cardStore.selectedCardID) {
                         ForEach(cardStore.cards) { card in
-                            CardPageView(
-                                card: card,
-                                isDefault: card.isDefault,
-                                onSetDefault: { cardStore.setDefaultCard(card) }
-                            )
-                            .tag(Optional(card.id))
+                            CardPageView(card: card)
+                                .tag(Optional(card.id))
                         }
                     }
                     .tabViewStyle(.page(indexDisplayMode: .automatic))
@@ -97,23 +93,11 @@ struct CardsHomeView: View {
 
 private struct CardPageView: View {
     let card: BusinessCard
-    let isDefault: Bool
-    let onSetDefault: () -> Void
     
     var body: some View {
         ScrollView {
             VStack(spacing: Design.Spacing.large) {
                 BusinessCardView(card: card)
-                
-                // Default card toggle
-                Button(
-                    isDefault ? String.localized("Default card") : String.localized("Set as default"),
-                    systemImage: isDefault ? "checkmark.seal.fill" : "checkmark.seal",
-                    action: onSetDefault
-                )
-                .buttonStyle(.bordered)
-                .tint(Color.Accent.red)
-                .accessibilityHint(String.localized("Sets this card as your default sharing card"))
             }
             .padding(.horizontal, Design.Spacing.large)
             .padding(.vertical, Design.Spacing.xLarge)