diff --git a/apps/spreadsheeteditor/mobile/app/controller/Main.js b/apps/spreadsheeteditor/mobile/app/controller/Main.js
index e41f69abe..7d7a03661 100644
--- a/apps/spreadsheeteditor/mobile/app/controller/Main.js
+++ b/apps/spreadsheeteditor/mobile/app/controller/Main.js
@@ -1298,7 +1298,7 @@ define([
                 if (url) this.iframePrint.src = url;
             },
 
-            leavePageText: 'You have unsaved changes in this document. Click \'Stay on this Page\' then \'Save\' to save them. Click \'Leave this Page\' to discard all the unsaved changes.',
+            leavePageText: 'You have unsaved changes in this document. Click \'Stay on this Page\' to await the autosave of the document. Click \'Leave this Page\' to discard all the unsaved changes.',
             defaultTitleText: 'ONLYOFFICE Spreadsheet Editor',
             criticalErrorTitle: 'Error',
             notcriticalErrorTitle: 'Warning',
@@ -1324,7 +1324,7 @@ define([
             uploadImageTextText: 'Uploading image...',
             savePreparingText: 'Preparing to save',
             savePreparingTitle: 'Preparing to save. Please wait...',
-            uploadImageSizeMessage: 'Maximium image size limit exceeded.',
+            uploadImageSizeMessage: 'Maximum image size limit exceeded.',
             uploadImageExtMessage: 'Unknown image format.',
             uploadImageFileCountMessage: 'No images uploaded.',
             reloadButtonText: 'Reload Page',
@@ -1332,15 +1332,9 @@ define([
             convertationTimeoutText: 'Convertation timeout exceeded.',
             downloadErrorText: 'Download failed.',
             unsupportedBrowserErrorText : 'Your browser is not supported.',
-            splitMaxRowsErrorText: 'The number of rows must be less than %1',
-            splitMaxColsErrorText: 'The number of columns must be less than %1',
-            splitDividerErrorText: 'The number of rows must be a divisor of %1',
             requestEditFailedTitleText: 'Access denied',
             requestEditFailedMessageText: 'Someone is editing this document right now. Please try again later.',
-            txtNeedSynchronize: 'You have an updates',
             textLoadingDocument: 'Loading document',
-            warnBrowserZoom: 'Your browser\'s current zoom setting is not fully supported. Please reset to the default zoom by pressing Ctrl+0.',
-            warnBrowserIE9: 'The application has low capabilities on IE9. Use IE10 or higher',
             applyChangesTitleText: 'Loading Data',
             applyChangesTextText: 'Loading data...',
             errorKeyEncrypt: 'Unknown key descriptor',
@@ -1374,7 +1368,7 @@ define([
             txtDiagramTitle: 'Chart Title',
             txtXAxis: 'X Axis',
             txtYAxis: 'Y Axis',
-            txtSeries: 'Seria',
+            txtSeries: 'Series',
             errorMailMergeLoadFile: 'Loading failed',
             mailMergeLoadFileText: 'Loading Data Source...',
             mailMergeLoadFileTitle: 'Loading Data Source',
@@ -1398,6 +1392,12 @@ define([
             titleLicenseExp: 'License expired',
             openErrorText: 'An error has occurred while opening the file',
             saveErrorText: 'An error has occurred while saving the file',
+            errorToken: 'The document security token is not correctly formed.<br>Please contact your Document Server administrator.',
+            errorTokenExpire: 'The document security token has expired.<br>Please contact your Document Server administrator.',
+            errorSessionAbsolute: 'The document editing session has expired. Please reload the page.',
+            errorSessionIdle: 'The document has not been edited for quite a long time. Please reload the page.',
+            errorSessionToken: 'The connection to the server has been interrupted. Please reload the page.',
+            errorAccessDeny: 'You are trying to perform an action you do not have rights for.<br>Please contact your Document Server administrator.',
             txtEncoding: 'Encoding',
             txtDelimiter: 'Delimiter',
             txtSpace: 'Space',
diff --git a/apps/spreadsheeteditor/mobile/locale/en.json b/apps/spreadsheeteditor/mobile/locale/en.json
index fdbcfe675..d5caa7491 100644
--- a/apps/spreadsheeteditor/mobile/locale/en.json
+++ b/apps/spreadsheeteditor/mobile/locale/en.json
@@ -2,6 +2,113 @@
   "Common.UI.ThemeColorPalette.textThemeColors": "Theme Colors",
   "Common.UI.ThemeColorPalette.textStandartColors": "Standard Colors",
 
+  "SSE.Controllers.Main.leavePageText": "You have unsaved changes in this document. Click 'Stay on this Page' to await the autosave of the document. Click 'Leave this Page' to discard all the unsaved changes.",
+  "SSE.Controllers.Main.defaultTitleText": "ONLYOFFICE Spreadsheet Editor",
+  "SSE.Controllers.Main.criticalErrorTitle": "Error",
+  "SSE.Controllers.Main.notcriticalErrorTitle": "Warning",
+  "SSE.Controllers.Main.errorDefaultMessage": "Error code: %1",
+  "SSE.Controllers.Main.criticalErrorExtText": "Press 'Ok' to back to document list.",
+  "SSE.Controllers.Main.openTitleText": "Opening Document",
+  "SSE.Controllers.Main.openTextText": "Opening document...",
+  "SSE.Controllers.Main.saveTitleText": "Saving Document",
+  "SSE.Controllers.Main.saveTextText": "Saving document...",
+  "SSE.Controllers.Main.loadFontsTitleText": "Loading Data",
+  "SSE.Controllers.Main.loadFontsTextText": "Loading data...",
+  "SSE.Controllers.Main.loadImagesTitleText": "Loading Images",
+  "SSE.Controllers.Main.loadImagesTextText": "Loading images...",
+  "SSE.Controllers.Main.loadFontTitleText": "Loading Data",
+  "SSE.Controllers.Main.loadFontTextText": "Loading data...",
+  "SSE.Controllers.Main.loadImageTitleText": "Loading Image",
+  "SSE.Controllers.Main.loadImageTextText": "Loading image...",
+  "SSE.Controllers.Main.downloadTitleText": "Downloading Document",
+  "SSE.Controllers.Main.downloadTextText": "Downloading document...",
+  "SSE.Controllers.Main.printTitleText": "Printing Document",
+  "SSE.Controllers.Main.printTextText": "Printing document...",
+  "SSE.Controllers.Main.uploadImageTitleText": "Uploading Image",
+  "SSE.Controllers.Main.uploadImageTextText": "Uploading image...",
+  "SSE.Controllers.Main.savePreparingText": "Preparing to save",
+  "SSE.Controllers.Main.savePreparingTitle": "Preparing to save. Please wait...",
+  "SSE.Controllers.Main.uploadImageSizeMessage": "Maximum image size limit exceeded.",
+  "SSE.Controllers.Main.uploadImageExtMessage": "Unknown image format.",
+  "SSE.Controllers.Main.uploadImageFileCountMessage": "No images uploaded.",
+  "SSE.Controllers.Main.reloadButtonText": "Reload Page",
+  "SSE.Controllers.Main.unknownErrorText": "Unknown error.",
+  "SSE.Controllers.Main.convertationTimeoutText": "Convertation timeout exceeded.",
+  "SSE.Controllers.Main.downloadErrorText": "Download failed.",
+  "SSE.Controllers.Main.unsupportedBrowserErrorText ": "Your browser is not supported.",
+  "SSE.Controllers.Main.requestEditFailedTitleText": "Access denied",
+  "SSE.Controllers.Main.requestEditFailedMessageText": "Someone is editing this document right now. Please try again later.",
+  "SSE.Controllers.Main.textLoadingDocument": "Loading document",
+  "SSE.Controllers.Main.applyChangesTitleText": "Loading Data",
+  "SSE.Controllers.Main.applyChangesTextText": "Loading data...",
+  "SSE.Controllers.Main.errorKeyEncrypt": "Unknown key descriptor",
+  "SSE.Controllers.Main.errorKeyExpire": "Key descriptor expired",
+  "SSE.Controllers.Main.errorUsersExceed": "Count of users was exceed",
+  "SSE.Controllers.Main.errorCoAuthoringDisconnect": "Server connection lost. You can't edit anymore.",
+  "SSE.Controllers.Main.errorFilePassProtect": "The document is password protected.",
+  "SSE.Controllers.Main.txtBasicShapes": "Basic Shapes",
+  "SSE.Controllers.Main.txtFiguredArrows": "Figured Arrows",
+  "SSE.Controllers.Main.txtMath": "Math",
+  "SSE.Controllers.Main.txtCharts": "Charts",
+  "SSE.Controllers.Main.txtStarsRibbons": "Stars & Ribbons",
+  "SSE.Controllers.Main.txtCallouts": "Callouts",
+  "SSE.Controllers.Main.txtButtons": "Buttons",
+  "SSE.Controllers.Main.txtRectangles": "Rectangles",
+  "SSE.Controllers.Main.txtLines": "Lines",
+  "SSE.Controllers.Main.txtEditingMode": "Set editing mode...",
+  "SSE.Controllers.Main.textAnonymous": "Anonymous",
+  "SSE.Controllers.Main.loadingDocumentTitleText": "Loading document",
+  "SSE.Controllers.Main.loadingDocumentTextText": "Loading document...",
+  "SSE.Controllers.Main.warnProcessRightsChange": "You have been denied the right to edit the file.",
+  "SSE.Controllers.Main.errorProcessSaveResult": "Saving is failed.",
+  "SSE.Controllers.Main.textShape": "Shape",
+  "SSE.Controllers.Main.errorStockChart": "Incorrect row order. To build a stock chart place the data on the sheet in the following order:<br> opening price, max price, min price, closing price.",
+  "SSE.Controllers.Main.errorDataRange": "Incorrect data range.",
+  "SSE.Controllers.Main.errorDatabaseConnection": "External error.<br>Database connection error. Please, contact support.",
+  "SSE.Controllers.Main.titleUpdateVersion": "Version changed",
+  "SSE.Controllers.Main.errorUpdateVersion": "The file version has been changed. The page will be reloaded.",
+  "SSE.Controllers.Main.errorUserDrop": "The file cannot be accessed right now.",
+  "SSE.Controllers.Main.txtDiagramTitle": "Chart Title",
+  "SSE.Controllers.Main.txtXAxis": "X Axis",
+  "SSE.Controllers.Main.txtYAxis": "Y Axis",
+  "SSE.Controllers.Main.txtSeries": "Series",
+  "SSE.Controllers.Main.errorMailMergeLoadFile": "Loading failed",
+  "SSE.Controllers.Main.mailMergeLoadFileText": "Loading Data Source...",
+  "SSE.Controllers.Main.mailMergeLoadFileTitle": "Loading Data Source",
+  "SSE.Controllers.Main.errorMailMergeSaveFile": "Merge failed.",
+  "SSE.Controllers.Main.downloadMergeText": "Downloading...",
+  "SSE.Controllers.Main.downloadMergeTitle": "Downloading",
+  "SSE.Controllers.Main.sendMergeTitle": "Sending Merge",
+  "SSE.Controllers.Main.sendMergeText": "Sending Merge...",
+  "SSE.Controllers.Main.txtArt": "Your text here",
+  "SSE.Controllers.Main.errorConnectToServer": "The document could not be saved. Please check connection settings or contact your administrator.<br>When you click the 'OK' button, you will be prompted to download the document.<br><br>Find more information about connecting Document Server <a href=\"https://api.onlyoffice.com/editors/callback\" target=\"_blank\">here</a>",
+  "SSE.Controllers.Main.textTryUndoRedo": "The Undo/Redo functions are disabled for the Fast co-editing mode.<br>Click the 'Strict mode' button to switch to the Strict co-editing mode to edit the file without other users interference and send your changes only after you save them. You can switch between the co-editing modes using the editor Advanced settings.",
+  "SSE.Controllers.Main.textStrict": "Strict mode",
+  "SSE.Controllers.Main.txtErrorLoadHistory": "Loading history failed",
+  "SSE.Controllers.Main.textBuyNow": "Visit website",
+  "SSE.Controllers.Main.textNoLicenseTitle": "ONLYOFFICE open source version",
+  "SSE.Controllers.Main.warnNoLicense": "You are using an open source version of ONLYOFFICE. The version has limitations for concurrent connections to the document server (20 connections at a time).<br>If you need more please consider purchasing a commercial license.",
+  "SSE.Controllers.Main.textContactUs": "Contact sales",
+  "SSE.Controllers.Main.errorViewerDisconnect": "Connection is lost. You can still view the document,<br>but will not be able to download until the connection is restored.",
+  "SSE.Controllers.Main.warnLicenseExp": "Your license has expired.<br>Please update your license and refresh the page.",
+  "SSE.Controllers.Main.titleLicenseExp": "License expired",
+  "SSE.Controllers.Main.openErrorText": "An error has occurred while opening the file",
+  "SSE.Controllers.Main.saveErrorText": "An error has occurred while saving the file",
+  "SSE.Controllers.Main.errorToken": "The document security token is not correctly formed.<br>Please contact your Document Server administrator.",
+  "SSE.Controllers.Main.errorTokenExpire": "The document security token has expired.<br>Please contact your Document Server administrator.",
+  "SSE.Controllers.Main.errorSessionAbsolute": "The document editing session has expired. Please reload the page.",
+  "SSE.Controllers.Main.errorSessionIdle": "The document has not been edited for quite a long time. Please reload the page.",
+  "SSE.Controllers.Main.errorSessionToken": "The connection to the server has been interrupted. Please reload the page.",
+  "SSE.Controllers.Main.errorAccessDeny": "You are trying to perform an action you do not have rights for.<br>Please contact your Document Server administrator.",
+  "SSE.Controllers.Main.txtEncoding": "Encoding",
+  "SSE.Controllers.Main.txtDelimiter": "Delimiter",
+  "SSE.Controllers.Main.txtSpace": "Space",
+  "SSE.Controllers.Main.txtTab": "Tab",
+  "SSE.Controllers.Main.advCSVOptions": "Choose CSV Options",
+  "SSE.Controllers.Main.advDRMOptions": "Protected File",
+  "SSE.Controllers.Main.advDRMEnterPassword": "You password please:",
+  "SSE.Controllers.Main.advDRMPassword": "Password",
+
   "SSE.Controllers.EditCell.textFonts": "Fonts",
   "SSE.Controllers.EditCell.textAuto": "Auto",
   "SSE.Controllers.EditCell.textPt": "pt",