diff --git a/ios/Podfile b/ios/Podfile
index 2f4009f..ebbee83 100644
--- a/ios/Podfile
+++ b/ios/Podfile
@@ -1,7 +1,7 @@
 source 'https://github.com/CocoaPods/Specs.git'
 source 'https://pt.singsound.com:10081/singsound-public/SingSoundSDKCocoaPodRepo.git'
 
-platform :ios, '11.0'
+platform :ios, '12.0'
 
 # CocoaPods analytics sends network stats synchronously affecting flutter build latency.
 ENV['COCOAPODS_DISABLE_STATS'] = 'true'
diff --git a/ios/Runner.xcodeproj/project.pbxproj b/ios/Runner.xcodeproj/project.pbxproj
index b665cbc..b02b223 100644
--- a/ios/Runner.xcodeproj/project.pbxproj
+++ b/ios/Runner.xcodeproj/project.pbxproj
@@ -223,7 +223,7 @@
 		97C146E61CF9000F007C117D /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 1300;
+				LastUpgradeCheck = 1430;
 				ORGANIZATIONNAME = "";
 				TargetAttributes = {
 					331C8080294A63A400263BE5 = {
diff --git a/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme b/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
index e42adcb..87131a0 100644
--- a/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
+++ b/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1300"
+   LastUpgradeVersion = "1430"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
diff --git a/lib/app/app.dart b/lib/app/app.dart
index 7315ad0..dba3ea1 100644
--- a/lib/app/app.dart
+++ b/lib/app/app.dart
@@ -2,8 +2,9 @@ import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_easyloading/flutter_easyloading.dart';
 import 'package:flutter_screenutil/flutter_screenutil.dart';
-import 'package:responsive_framework/breakpoint.dart';
-import 'package:responsive_framework/responsive_breakpoints.dart';
+import 'package:responsive_framework/responsive_framework.dart';
+// import 'package:responsive_framework/breakpoint.dart';
+// import 'package:responsive_framework/responsive_breakpoints.dart';
 import 'package:wow_english/common/blocs/cachebloc/cache_bloc.dart';
 import 'package:wow_english/common/widgets/hide_keyboard_widget.dart';
 import 'package:wow_english/pages/tab/blocs/tab_bloc.dart';