diff --git a/mobile/App.tsx b/mobile/App.tsx
index d0c8dc5..38e2ba8 100644
--- a/mobile/App.tsx
+++ b/mobile/App.tsx
@@ -9,6 +9,7 @@ import { ScanScreen } from './app/scan';
 import { SearchScreen } from './app/search';
 import { BatchReviewScreen } from './app/batch-review';
 import { PendingReviewScreen } from './app/pending-review';
+import { FileDetailScreen } from './app/file-detail';
 
 const Stack = createNativeStackNavigator();
 const queryClient = new QueryClient();
@@ -29,6 +30,11 @@ export default function App() {
           <Stack.Screen name="Search" component={SearchScreen} options={{ title: 'Recherche' }} />
           <Stack.Screen name="BatchReview" component={BatchReviewScreen} options={{ title: 'Revue du lot' }} />
           <Stack.Screen name="PendingReview" component={PendingReviewScreen} options={{ title: 'Réorganisation' }} />
+          <Stack.Screen
+            name="FileDetail"
+            component={FileDetailScreen}
+            options={{ title: 'Détails', headerTintColor: '#fff', headerStyle: { backgroundColor: '#000' } }}
+          />
         </Stack.Navigator>
       </NavigationContainer>
       <StatusBar style="auto" />
diff --git a/mobile/app/file-detail.tsx b/mobile/app/file-detail.tsx
new file mode 100644
index 0000000..c0314de
--- /dev/null
+++ b/mobile/app/file-detail.tsx
@@ -0,0 +1,216 @@
+import React, { useRef, useState } from 'react';
+import {
+  View,
+  Text,
+  StyleSheet,
+  FlatList,
+  Image,
+  Dimensions,
+  ActivityIndicator,
+  ScrollView,
+} from 'react-native';
+import { RouteProp, useRoute } from '@react-navigation/native';
+import { useFile, useFileImage } from '../hooks/useFiles';
+import { TagChip } from '../components/TagChip';
+
+const SCREEN_WIDTH = Dimensions.get('window').width;
+
+type RootStackParamList = {
+  FileDetail: { fileIds: string[]; initialIndex: number };
+};
+
+type FileDetailRouteProp = RouteProp<RootStackParamList, 'FileDetail'>;
+
+function DetailItem({ fileId }: { fileId: string }) {
+  const { data: imageData, isLoading: imageLoading } = useFileImage(fileId);
+  const { data: fileData } = useFile(fileId);
+  const uri = imageData?.data?.url;
+  const file = fileData as any;
+
+  return (
+    <ScrollView style={styles.page} contentContainerStyle={styles.pageContent}>
+      <View style={styles.imageContainer}>
+        {imageLoading ? (
+          <ActivityIndicator size="large" color="#1976D2" />
+        ) : uri ? (
+          <Image source={{ uri }} style={styles.image} resizeMode="contain" />
+        ) : (
+          <View style={styles.placeholder}>
+            <Text style={styles.placeholderText}>PDF</Text>
+          </View>
+        )}
+      </View>
+
+      <View style={styles.details}>
+        <Text style={styles.fileName}>{imageData?.data?.name ?? file?.name ?? fileId}</Text>
+
+        {imageData?.data?.size != null && (
+          <Text style={styles.meta}>
+            Taille : {(imageData.data.size / 1024).toFixed(1)} Ko
+          </Text>
+        )}
+
+        {file?.createdAt && (
+          <Text style={styles.meta}>
+            Ajouté le {new Date(file.createdAt).toLocaleDateString('fr-FR', {
+              day: 'numeric', month: 'long', year: 'numeric',
+            })}
+          </Text>
+        )}
+
+        {file?.tags && file.tags.length > 0 && (
+          <View style={styles.tagsSection}>
+            <Text style={styles.sectionLabel}>Tags</Text>
+            <View style={styles.tagsRow}>
+              {file.tags.map((tag: any) => (
+                <TagChip key={tag.id} name={tag.name} />
+              ))}
+            </View>
+          </View>
+        )}
+
+        {file?.ocrText && (
+          <View style={styles.ocrSection}>
+            <Text style={styles.sectionLabel}>Texte OCR</Text>
+            <Text style={styles.ocrText}>{file.ocrText}</Text>
+          </View>
+        )}
+      </View>
+    </ScrollView>
+  );
+}
+
+export function FileDetailScreen() {
+  const route = useRoute<FileDetailRouteProp>();
+  const { fileIds, initialIndex } = route.params;
+
+  const flatListRef = useRef<FlatList>(null);
+  const [currentIndex, setCurrentIndex] = useState(initialIndex);
+
+  return (
+    <View style={styles.container}>
+      <FlatList
+        ref={flatListRef}
+        data={fileIds}
+        keyExtractor={(item) => item}
+        horizontal
+        pagingEnabled
+        showsHorizontalScrollIndicator={false}
+        initialScrollIndex={initialIndex}
+        getItemLayout={(_, index) => ({
+          length: SCREEN_WIDTH,
+          offset: SCREEN_WIDTH * index,
+          index,
+        })}
+        onMomentumScrollEnd={(e) => {
+          const index = Math.round(e.nativeEvent.contentOffset.x / SCREEN_WIDTH);
+          setCurrentIndex(index);
+        }}
+        renderItem={({ item }) => (
+          <View style={styles.pageWrapper}>
+            <DetailItem fileId={item} />
+          </View>
+        )}
+      />
+
+      <View style={styles.pagination}>
+        <Text style={styles.paginationText}>
+          {currentIndex + 1} / {fileIds.length}
+        </Text>
+      </View>
+    </View>
+  );
+}
+
+const styles = StyleSheet.create({
+  container: {
+    flex: 1,
+    backgroundColor: '#000',
+  },
+  pageWrapper: {
+    width: SCREEN_WIDTH,
+  },
+  page: {
+    flex: 1,
+  },
+  pageContent: {
+    flexGrow: 1,
+  },
+  imageContainer: {
+    flex: 1,
+    justifyContent: 'center',
+    alignItems: 'center',
+    backgroundColor: '#000',
+  },
+  image: {
+    width: SCREEN_WIDTH,
+    height: SCREEN_WIDTH,
+  },
+  placeholder: {
+    width: SCREEN_WIDTH,
+    height: SCREEN_WIDTH,
+    justifyContent: 'center',
+    alignItems: 'center',
+    backgroundColor: '#1a1a2e',
+  },
+  placeholderText: {
+    fontSize: 48,
+    color: '#1976D2',
+    fontWeight: '700',
+  },
+  details: {
+    backgroundColor: '#fff',
+    borderTopLeftRadius: 16,
+    borderTopRightRadius: 16,
+    marginTop: -16,
+    padding: 20,
+  },
+  fileName: {
+    fontSize: 18,
+    fontWeight: '700',
+    color: '#333',
+    marginBottom: 8,
+  },
+  meta: {
+    fontSize: 14,
+    color: '#666',
+    marginBottom: 4,
+  },
+  tagsRow: {
+    flexDirection: 'row',
+    flexWrap: 'wrap',
+    gap: 6,
+    marginTop: 8,
+  },
+  tagsSection: {
+    marginTop: 12,
+  },
+  sectionLabel: {
+    fontSize: 14,
+    fontWeight: '600',
+    color: '#333',
+    marginBottom: 4,
+  },
+  ocrSection: {
+    marginTop: 16,
+  },
+  ocrText: {
+    fontSize: 14,
+    color: '#555',
+    lineHeight: 20,
+    marginTop: 4,
+  },
+  pagination: {
+    position: 'absolute',
+    bottom: 16,
+    alignSelf: 'center',
+    backgroundColor: 'rgba(0,0,0,0.5)',
+    borderRadius: 12,
+    paddingHorizontal: 12,
+    paddingVertical: 4,
+  },
+  paginationText: {
+    color: '#fff',
+    fontSize: 13,
+  },
+});
diff --git a/mobile/app/index.tsx b/mobile/app/index.tsx
index ff784df..3f1abec 100644
--- a/mobile/app/index.tsx
+++ b/mobile/app/index.tsx
@@ -14,6 +14,7 @@ type RootStackParamList = {
   Home: undefined;
   Upload: undefined;
   Scan: undefined;
+  FileDetail: { fileIds: string[]; initialIndex: number };
 };
 
 type NavigationProp = NativeStackNavigationProp<RootStackParamList>;
@@ -51,13 +52,13 @@ function formatDateLabel(key: string): string {
   return key.charAt(0).toUpperCase() + key.slice(1);
 }
 
-function FileGridItem({ file }: { file: FileItem }) {
+function FileGridItem({ file, onPress }: { file: FileItem; onPress?: () => void }) {
   const { data, isLoading } = useFileImage(file.id);
 
   const uri = data?.data?.url;
 
   return (
-    <View style={styles.gridItem}>
+    <TouchableOpacity style={styles.gridItem} onPress={onPress} activeOpacity={0.7}>
       {isLoading ? (
         <View style={styles.placeholder}>
           <ActivityIndicator size="small" color="#1976D2" />
@@ -70,7 +71,7 @@ function FileGridItem({ file }: { file: FileItem }) {
         </View>
       )}
       <Text style={styles.fileName} numberOfLines={1}>{file.name}</Text>
-    </View>
+    </TouchableOpacity>
   );
 }
 
@@ -101,6 +102,12 @@ export function HomeScreen() {
   const groups = groupByDate(filteredFiles);
   const groupKeys = Object.keys(groups);
 
+  const fileIdToIndex = useMemo(() => {
+    const map = new Map<string, number>();
+    filteredFiles.forEach((f, i) => map.set(f.id, i));
+    return map;
+  }, [filteredFiles]);
+
   if (isLoading) {
     return (
       <View style={styles.center}>
@@ -154,7 +161,16 @@ export function HomeScreen() {
               <Text style={styles.sectionTitle}>{formatDateLabel(dateKey)}</Text>
               <View style={styles.grid}>
                 {groupFiles.map((file) => (
-                  <FileGridItem key={file.id} file={file} />
+                  <FileGridItem
+                    key={file.id}
+                    file={file}
+                    onPress={() =>
+                      navigation.navigate('FileDetail', {
+                        fileIds: filteredFiles.map((f) => f.id),
+                        initialIndex: fileIdToIndex.get(file.id) ?? 0,
+                      })
+                    }
+                  />
                 ))}
               </View>
             </View>