diff --git a/mobile/lib/core/constants.dart b/mobile/lib/core/constants.dart
index 640af728b..1cd9da1dd 100644
--- a/mobile/lib/core/constants.dart
+++ b/mobile/lib/core/constants.dart
@@ -1,5 +1,3 @@
-import "package:photos/utils/crypto_util.dart";
-
 const int thumbnailSmallSize = 256;
 const int thumbnailQuality = 50;
 const int thumbnailLargeSize = 512;
@@ -50,11 +48,6 @@ class FFDefault {
 // this is the chunk size of the un-encrypted file which is read and encrypted before uploading it as a single part.
 const multipartPartSize = 20 * 1024 * 1024;
 
-const fileReaderChunkSize = encryptionChunkSize;
-
-final fileChunksCombinedForAUploadPart =
-    (multipartPartSize / fileReaderChunkSize).floor();
-
 const kDefaultProductionEndpoint = 'https://api.ente.io';
 
 const int intMaxValue = 9223372036854775807;
@@ -81,11 +74,11 @@ const kSearchSectionLimit = 9;
 
 const iOSGroupID = "group.io.ente.frame.SlideshowWidget";
 
-const blackThumbnailBase64 = '/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAEBAQEBAQEB' +
-    'AQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQH/2wBDAQEBAQEBAQ' +
-    'EBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQH/wAARC' +
-    'ACWASwDAREAAhEBAxEB/8QAHwAAAQUBAQEBAQEAAAAAAAAAAAECAwQFBgcICQoL/8QAtRAAAgEDAwIEAwUF' +
-    'BAQAAAF9AQIDAAQRBRIhMUEGE1FhByJxFDKBkaEII0KxwRVS0fAkM2JyggkKFhcYGRolJicoKSo0NTY3ODk' +
+const blackThumbnailBase64 = '/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAEBAQEBAQEB'
+        'AQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQH/2wBDAQEBAQEBAQ'
+        'EBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQH/wAARC'
+        'ACWASwDAREAAhEBAxEB/8QAHwAAAQUBAQEBAQEAAAAAAAAAAAECAwQFBgcICQoL/8QAtRAAAgEDAwIEAwUF'
+        'BAQAAAF9AQIDAAQRBRIhMUEGE1FhByJxFDKBkaEII0KxwRVS0fAkM2JyggkKFhcYGRolJicoKSo0NTY3ODk' +
     '6Q0RFRkdISUpTVFVWV1hZWmNkZWZnaGlqc3R1dnd4eXqDhIWGh4iJipKTlJWWl5iZmqKjpKWmp6ipqrKztL' +
     'W2t7i5usLDxMXGx8jJytLT1NXW19jZ2uHi4+Tl5ufo6erx8vP09fb3+Pn6/8QAHwEAAwEBAQEBAQEBAQAAA' +
     'AAAAAECAwQFBgcICQoL/8QAtREAAgECBAQDBAcFBAQAAQJ3AAECAxEEBSExBhJBUQdhcRMiMoEIFEKRobHBCSMzUvAVY' +