diff --git a/backend/src/utils/diffTranslations.ts b/backend/src/utils/diffTranslations.ts
index 5d61d0e..a73fdcd 100644
--- a/backend/src/utils/diffTranslations.ts
+++ b/backend/src/utils/diffTranslations.ts
@@ -217,6 +217,7 @@ export const diffTranslations: Record<
     web: { label: "Webseite" },
     email: { label: "E-Mail" },
     tel: { label: "Telefon" },
+    mobileTel: { label: "Mobilnummer" },
     ustid: { label: "USt-ID" },
     role: { label: "Rolle" },
     phoneHome: { label: "Festnetz" },
diff --git a/frontend/stores/data.js b/frontend/stores/data.js
index 171011b..4b32e3d 100644
--- a/frontend/stores/data.js
+++ b/frontend/stores/data.js
@@ -396,6 +396,12 @@ export const useDataStore = defineStore('data', () => {
                     inputType: "text",
                     inputColumn: "Kontaktdaten"
                 },
+                {
+                    key: "infoData.mobileTel",
+                    label: "Mobilnummer",
+                    inputType: "text",
+                    inputColumn: "Kontaktdaten"
+                },
                 {
                     key: "infoData.email",
                     label: "E-Mail",
diff --git a/mobile/app/more/customer/[id].tsx b/mobile/app/more/customer/[id].tsx
index 58a5353..fc784a4 100644
--- a/mobile/app/more/customer/[id].tsx
+++ b/mobile/app/more/customer/[id].tsx
@@ -110,12 +110,15 @@ export default function CustomerDetailScreen() {
 
   const rows = useMemo(() => {
     if (!customer) return [];
+    const infoData = customer.infoData || {};
+
     return [
       { label: 'Name', value: String(customer.name || '-') },
       { label: 'Kundennummer', value: String(customer.customerNumber || '-') },
       { label: 'Typ', value: String(customer.type || '-') },
-      { label: 'E-Mail', value: String(customer.email || '-') },
-      { label: 'Telefon', value: String(customer.phone || '-') },
+      { label: 'E-Mail', value: String(infoData.email || customer.email || '-') },
+      { label: 'Telefon', value: String(infoData.tel || customer.phone || '-') },
+      { label: 'Mobilnummer', value: String(infoData.mobileTel || '-') },
       { label: 'Erstellt', value: formatDateTime(customer.createdAt || customer.created_at) },
       { label: 'Aktualisiert', value: formatDateTime(customer.updatedAt || customer.updated_at) },
     ];
diff --git a/mobile/src/lib/api.ts b/mobile/src/lib/api.ts
index e61aa73..15272a7 100644
--- a/mobile/src/lib/api.ts
+++ b/mobile/src/lib/api.ts
@@ -74,6 +74,12 @@ export type Customer = {
   customerNumber?: string | null;
   notes?: string | null;
   archived?: boolean;
+  infoData?: {
+    email?: string | null;
+    tel?: string | null;
+    mobileTel?: string | null;
+    [key: string]: unknown;
+  } | null;
   [key: string]: unknown;
 };