diff --git a/src/components/common/DeleteMessageModal.tsx b/src/components/common/DeleteMessageModal.tsx
index c454095c7..00653da2b 100644
--- a/src/components/common/DeleteMessageModal.tsx
+++ b/src/components/common/DeleteMessageModal.tsx
@@ -94,7 +94,7 @@ const DeleteMessageModal: FC<OwnProps & StateProps & DispatchProps> = ({
         <p>{lang('lng_delete_for_me_chat_hint')}</p>
       )}
       {willDeleteForAll && (
-        <p>{lang('lng_delete_for_everyone_hint')}</p>
+        <p>{lang('lng_delete_for_everyone_hint', 1, 'i')}</p>
       )}
       {canDeleteForAll && (
         <Button color="danger" className="confirm-dialog-button" isText onClick={handleDeleteMessageForAll}>
diff --git a/src/components/common/PinMessageModal.tsx b/src/components/common/PinMessageModal.tsx
index 1e5800e24..12f455705 100644
--- a/src/components/common/PinMessageModal.tsx
+++ b/src/components/common/PinMessageModal.tsx
@@ -65,24 +65,16 @@ const PinMessageModal: FC<OwnProps & StateProps & DispatchProps> = ({
 
   const lang = useLang();
 
-  function renderModalHeader() {
-    return (
-      <div className="modal-header">
-        <h3 className="modal-title">{lang('PinMessageAlertTitle')}</h3>
-      </div>
-    );
-  }
-
   function renderMessage() {
     if (isChannel) {
-      return <p>{lang('PinMessageAlertChannel')}</p>;
+      return lang('PinMessageAlertChannel');
     }
 
     if (isGroup || isSuperGroup) {
-      return <p>{lang('PinMessageAlert')}</p>;
+      return lang('PinMessageAlert');
     }
 
-    return <p>{lang('PinMessageAlertChat')}</p>;
+    return lang('PinMessageAlertChat');
   }
 
   return (
@@ -90,15 +82,17 @@ const PinMessageModal: FC<OwnProps & StateProps & DispatchProps> = ({
       isOpen={isOpen}
       onClose={onClose}
       className="pin"
-      header={renderModalHeader()}
+      title={lang('PinMessageAlertTitle')}
     >
-      {renderMessage()}
+      <p>{renderMessage()}</p>
       <Button className="confirm-dialog-button" isText onClick={handlePinMessage}>
         {lang('DialogPin')}
       </Button>
       {canPinForAll && (
         <Button className="confirm-dialog-button" isText onClick={handlePinMessageForAll}>
-          {contactName ? `Pin for me and ${contactName}` : 'Pin and notify all memebers'}
+          {contactName
+            ? lang('Conversation.PinMessagesFor', contactName)
+            : lang('Conversation.PinMessageAlert.PinAndNotifyMembers')}
         </Button>
       )}
       <Button className="confirm-dialog-button" isText onClick={onClose}>{lang('Cancel')}</Button>
diff --git a/src/components/common/StickerSetModal.tsx b/src/components/common/StickerSetModal.tsx
index 1b6808708..e3c88aa25 100644
--- a/src/components/common/StickerSetModal.tsx
+++ b/src/components/common/StickerSetModal.tsx
@@ -78,7 +78,7 @@ const StickerSetModal: FC<OwnProps & StateProps & DispatchProps> = ({
       isOpen={isOpen}
       onClose={onClose}
       hasCloseButton
-      title={stickerSet ? stickerSet.title : 'Sticker Set'}
+      title={stickerSet ? stickerSet.title : lang('AccDescrStickerSet')}
     >
       {stickerSet && stickerSet.stickers ? (
         <>
diff --git a/src/components/common/UnpinAllMessagesModal.tsx b/src/components/common/UnpinAllMessagesModal.tsx
index 5da66e536..5f497ad26 100644
--- a/src/components/common/UnpinAllMessagesModal.tsx
+++ b/src/components/common/UnpinAllMessagesModal.tsx
@@ -1,7 +1,5 @@
 import React, { FC, memo } from '../../lib/teact/teact';
-import { withGlobal } from '../../lib/teact/teactn';
 
-import { selectPinnedIds } from '../../modules/selectors';
 import useLang from '../../hooks/useLang';
 
 import Modal from '../ui/Modal';
@@ -10,42 +8,26 @@ import Button from '../ui/Button';
 export type OwnProps = {
   isOpen: boolean;
   chatId?: number;
+  pinnedMessagesCount?: number;
   onClose: () => void;
   onUnpin: () => void;
 };
 
-type StateProps = {
-  pinnedMessagesCount: number;
-};
-
-const UnpinAllMessagesModal: FC<OwnProps & StateProps> = ({
+const UnpinAllMessagesModal: FC<OwnProps> = ({
   isOpen,
-  pinnedMessagesCount,
+  pinnedMessagesCount = 0,
   onClose,
   onUnpin,
 }) => {
   const lang = useLang();
-
-  function renderModalHeader() {
-    return (
-      <div className="modal-header">
-        <h3 className="modal-title">{lang('UnpinAllMessages')}</h3>
-      </div>
-    );
-  }
-
-  function renderMessage() {
-    return <p>Do you want to unpin all {pinnedMessagesCount} messages in this chat?</p>;
-  }
-
   return (
     <Modal
       isOpen={isOpen}
       onClose={onClose}
       className="unpin-all"
-      header={renderModalHeader()}
+      title={lang('Chat.PanelUnpinAllMessages')}
     >
-      {renderMessage()}
+      <p>{lang('Chat.UnpinAllMessagesConfirmation', pinnedMessagesCount, 'i')}</p>
       <Button className="confirm-dialog-button" isText onClick={onUnpin}>
         {lang('DialogUnpin')}
       </Button>
@@ -54,12 +36,4 @@ const UnpinAllMessagesModal: FC<OwnProps & StateProps> = ({
   );
 };
 
-export default memo(withGlobal<OwnProps>(
-  (global, { chatId }): StateProps => {
-    const pinnedIds = chatId ? selectPinnedIds(global, chatId) : [];
-
-    return {
-      pinnedMessagesCount: pinnedIds ? pinnedIds.length : 0,
-    };
-  },
-)(UnpinAllMessagesModal));
+export default memo(UnpinAllMessagesModal);
diff --git a/src/components/middle/DeleteSelectedMessagesModal.tsx b/src/components/middle/DeleteSelectedMessagesModal.tsx
index 68d679fda..11a755598 100644
--- a/src/components/middle/DeleteSelectedMessagesModal.tsx
+++ b/src/components/middle/DeleteSelectedMessagesModal.tsx
@@ -78,7 +78,7 @@ const DeleteSelectedMessagesModal: FC<OwnProps & StateProps & DispatchProps> = (
       onClose={onClose}
       onEnter={canDeleteForAll ? undefined : handleDeleteMessageForSelf}
       className="delete"
-      title="Delete Messages?"
+      title={lang('Conversation.DeleteManyMessages')}
     >
       <p>{lang('AreYouSureDeleteFewMessages')}</p>
       {willDeleteForCurrentUserOnly && (
@@ -89,12 +89,13 @@ const DeleteSelectedMessagesModal: FC<OwnProps & StateProps & DispatchProps> = (
       )}
       {canDeleteForAll && (
         <Button color="danger" className="confirm-dialog-button" isText onClick={handleDeleteMessageForAll}>
-          Delete for {contactName ? 'me and ' : 'Everyone'}
-          {contactName && renderText(contactName)}
+          {contactName
+            ? lang('ChatList.DeleteForEveryone', renderText(contactName))
+            : lang('Conversation.DeleteMessagesForEveryone')}
         </Button>
       )}
       <Button color="danger" className="confirm-dialog-button" isText onClick={handleDeleteMessageForSelf}>
-        Delete{canDeleteForAll ? ' just for me' : ''}
+        {lang(canDeleteForAll ? 'ChatList.DeleteForCurrentUser' : 'Delete')}
       </Button>
       <Button className="confirm-dialog-button" isText onClick={onClose}>{lang('Cancel')}</Button>
     </Modal>
diff --git a/src/components/middle/MiddleColumn.tsx b/src/components/middle/MiddleColumn.tsx
index 31fb1a2be..bc9424f69 100644
--- a/src/components/middle/MiddleColumn.tsx
+++ b/src/components/middle/MiddleColumn.tsx
@@ -58,6 +58,7 @@ type StateProps = {
   canPost?: boolean;
   messageSendingRestrictionReason?: string;
   hasPinnedOrAudioMessage?: boolean;
+  pinnedMessagesCount?: number;
   customBackground?: string;
   patternColor?: string;
   isCustomBackgroundColor?: boolean;
@@ -85,6 +86,7 @@ const MiddleColumn: FC<StateProps & DispatchProps> = ({
   canPost,
   messageSendingRestrictionReason,
   hasPinnedOrAudioMessage,
+  pinnedMessagesCount,
   customBackground,
   patternColor,
   isCustomBackgroundColor,
@@ -261,7 +263,7 @@ const MiddleColumn: FC<StateProps & DispatchProps> = ({
                           onClick={handleOpenUnpinModal}
                         >
                           <i className="icon-unpin" />
-                          <span>{lang('Chat.PanelHidePinnedMessages')}</span>
+                          <span>{lang('Chat.Pinned.UnpinAll', pinnedMessagesCount, 'i')}</span>
                         </Button>
                       </div>
                     )}
@@ -296,6 +298,7 @@ const MiddleColumn: FC<StateProps & DispatchProps> = ({
         <UnpinAllMessagesModal
           isOpen={isUnpinModalOpen}
           chatId={chatId}
+          pinnedMessagesCount={pinnedMessagesCount}
           onClose={closeUnpinModal}
           onUnpin={handleUnpinAllMessages}
         />
@@ -350,6 +353,7 @@ export default memo(withGlobal(
         || Boolean(pinnedIds && pinnedIds.length)
         || Boolean(audioChatId && audioMessageId)
       ),
+      pinnedMessagesCount: pinnedIds ? pinnedIds.length : 0,
     };
   },
   (setGlobal, actions): DispatchProps => pick(actions, [
diff --git a/src/components/middle/composer/AttachmentModal.tsx b/src/components/middle/composer/AttachmentModal.tsx
index f44e6e100..f3138dd70 100644
--- a/src/components/middle/composer/AttachmentModal.tsx
+++ b/src/components/middle/composer/AttachmentModal.tsx
@@ -149,11 +149,11 @@ const AttachmentModal: FC<OwnProps> = ({
 
   let title = '';
   if (areAllPhotos) {
-    title = renderingAttachments.length === 1 ? 'Send Photo' : `Send ${renderingAttachments.length} Photos`;
+    title = lang('PreviewSender.SendPhoto', renderingAttachments.length, 'i');
   } else if (areAllVideos) {
-    title = renderingAttachments.length === 1 ? 'Send Video' : `Send ${renderingAttachments.length} Videos`;
+    title = lang('PreviewSender.SendVideo', renderingAttachments.length, 'i');
   } else {
-    title = renderingAttachments.length === 1 ? 'Send File' : `Send ${renderingAttachments.length} Files`;
+    title = lang('PreviewSender.SendFile', renderingAttachments.length, 'i');
   }
 
   function renderHeader() {
diff --git a/src/components/middle/composer/PollModal.tsx b/src/components/middle/composer/PollModal.tsx
index 43e7eeda7..1663b4dc4 100644
--- a/src/components/middle/composer/PollModal.tsx
+++ b/src/components/middle/composer/PollModal.tsx
@@ -46,6 +46,8 @@ const PollModal: FC<OwnProps> = ({ isOpen, onSend, onClear }) => {
   const [correctOption, setCorrectOption] = useState<string>();
   const [hasErrors, setHasErrors] = useState<boolean>(false);
 
+  const lang = useLang();
+
   const focusInput = useCallback((ref: RefObject<HTMLInputElement>) => {
     if (isOpen && ref.current) {
       ref.current.focus();
@@ -206,21 +208,19 @@ const PollModal: FC<OwnProps> = ({ isOpen, onSend, onClear }) => {
 
   const getQuestionError = useCallback(() => {
     if (hasErrors && !question.trim().length) {
-      return 'Please enter the question';
+      return lang('lng_polls_choose_question');
     }
 
     return undefined;
-  }, [hasErrors, question]);
+  }, [hasErrors, lang, question]);
 
   const getOptionsError = useCallback((index: number) => {
     const optionsTrimmed = options.map((o) => o.trim()).filter((o) => o.length);
     if (hasErrors && optionsTrimmed.length < 2 && !options[index].trim().length) {
-      return 'Please enter at least two options';
+      return lang('lng_polls_choose_answers');
     }
     return undefined;
-  }, [hasErrors, options]);
-
-  const lang = useLang();
+  }, [hasErrors, lang, options]);
 
   function renderHeader() {
     return (
@@ -246,8 +246,8 @@ const PollModal: FC<OwnProps> = ({ isOpen, onSend, onClear }) => {
       <div className="option-wrapper">
         <InputText
           label={index !== options.length - 1 || options.length === MAX_OPTIONS_COUNT
-            ? `Option ${index + 1}`
-            : 'Add an Option'}
+            ? lang('OptionHint')
+            : lang('CreatePoll.AddOption')}
           error={getOptionsError(index)}
           value={option}
           onChange={(e) => updateOption(index, e.currentTarget.value)}
@@ -259,7 +259,7 @@ const PollModal: FC<OwnProps> = ({ isOpen, onSend, onClear }) => {
             round
             color="translucent"
             size="smaller"
-            ariaLabel="Remove option"
+            ariaLabel={lang('Delete')}
             onClick={() => removeOption(index)}
           >
             <i className="icon-close" />
@@ -278,9 +278,7 @@ const PollModal: FC<OwnProps> = ({ isOpen, onSend, onClear }) => {
     const optionsTrimmed = options.map((o) => o.trim()).filter((o) => o.length);
 
     return isQuizMode && (!correctOption || !optionsTrimmed[Number(correctOption)]) && (
-      <p className="error">
-        Please choose the correct answer
-      </p>
+      <p className="error">{lang('lng_polls_choose_correct')}</p>
     );
   }
 
@@ -341,9 +339,7 @@ const PollModal: FC<OwnProps> = ({ isOpen, onSend, onClear }) => {
               contentEditable
               onChange={(e) => setSolution(e.currentTarget.innerHTML)}
             />
-            <div className="note">
-              Users will see this comment after choosing a wrong answer, good for educational purposes.
-            </div>
+            <div className="note">{lang('CreatePoll.ExplanationInfo')}</div>
           </>
         )}
       </div>
diff --git a/src/components/payment/PaymentModal.tsx b/src/components/payment/PaymentModal.tsx
index 1250daa36..8ea218357 100644
--- a/src/components/payment/PaymentModal.tsx
+++ b/src/components/payment/PaymentModal.tsx
@@ -167,12 +167,12 @@ const Invoice: FC<OwnProps & StateProps & GlobalStateProps & DispatchProps> = ({
         onClose={handleErrorModalClose}
       >
         <h4>{error.description || 'Error'}</h4>
-        {error.description || 'Error'}
+        <p>{error.description || 'Error'}</p>
         <Button
           isText
           onClick={clearPaymentError}
         >
-          OK
+          {lang('OK')}
         </Button>
       </Modal>
     );
@@ -287,11 +287,11 @@ const Invoice: FC<OwnProps & StateProps & GlobalStateProps & DispatchProps> = ({
   const buttonText = useMemo(() => {
     switch (step) {
       case PaymentStep.Checkout:
-        return `Pay ${currencySign}${(totalPrice / 100).toFixed(2)}`;
+        return lang('Checkout.PayPrice', `${currencySign}${(totalPrice / 100).toFixed(2)}`);
       default:
-        return 'Next Step';
+        return lang('Next');
     }
-  }, [step, totalPrice, currencySign]);
+  }, [step, lang, currencySign, totalPrice]);
 
   if (isProviderError) {
     return (
@@ -300,13 +300,15 @@ const Invoice: FC<OwnProps & StateProps & GlobalStateProps & DispatchProps> = ({
         isOpen={isOpen}
         onClose={onClose}
       >
-        Sorry, Telegram T doesn&apos;t support payments with this provider yet.
-         Please use one of our mobile apps to do this.
+        <p>
+          Sorry, Telegram T doesn&apos;t support payments with this provider yet. <br />
+          Please use one of our mobile apps to do this.
+        </p>
         <Button
           isText
           onClick={onClose}
         >
-          OK
+          {lang('OK')}
         </Button>
       </Modal>
     );
@@ -329,7 +331,7 @@ const Invoice: FC<OwnProps & StateProps & GlobalStateProps & DispatchProps> = ({
         >
           <i className="icon-close" />
         </Button>
-        <h3>{ modalHeader }</h3>
+        <h3>{modalHeader}</h3>
       </div>
       {step !== undefined ? (
         <Transition name="slide" activeKey={step}>