diff --git a/Billing.Shared/Helper.cs b/Billing.Shared/Helper.cs
index 69223a3..897162c 100644
--- a/Billing.Shared/Helper.cs
+++ b/Billing.Shared/Helper.cs
@@ -147,6 +147,39 @@ namespace Billing
             }
             return status;
         }
+
+        private static double TransformLatitude(double x, double y)
+        {
+            var ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y + 0.2 * Math.Sqrt(Math.Abs(x));
+            ret += (20.0 * Math.Sin(6.0 * x * Math.PI) + 20.0 * Math.Sin(2.0 * x * Math.PI)) * 2.0 / 3.0;
+            ret += (20.0 * Math.Sin(y * Math.PI) + 40.0 * Math.Sin(y / 3.0 * Math.PI)) * 2.0 / 3.0;
+            ret += (160.0 * Math.Sin(y / 12.0 * Math.PI) + 320 * Math.Sin(y * Math.PI / 30.0)) * 2.0 / 3.0;
+            return ret;
+        }
+
+        private static double TransformLongitude(double x, double y)
+        {
+            var ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * Math.Sqrt(Math.Abs(x));
+            ret += (20.0 * Math.Sin(6.0 * x * Math.PI) + 20.0 * Math.Sin(2.0 * x * Math.PI)) * 2.0 / 3.0;
+            ret += (20.0 * Math.Sin(x * Math.PI) + 40.0 * Math.Sin(x / 3.0 * Math.PI)) * 2.0 / 3.0;
+            ret += (150.0 * Math.Sin(x / 12.0 * Math.PI) + 300.0 * Math.Sin(x / 30.0 * Math.PI)) * 2.0 / 3.0;
+            return ret;
+        }
+
+        public static (double longitude, double latitude) Wgs84ToGcj02(double longitude, double latitude)
+        {
+            var a = 6378245.0;
+            var ee = 0.00669342162296594323;
+            var offsetLatitude = TransformLatitude(longitude - 105.0, latitude - 35.0);
+            var offsetLongitude = TransformLongitude(longitude - 105.0, latitude - 35.0);
+            var radiusLatitude = latitude / 180.0 * Math.PI;
+            var magic = Math.Sin(radiusLatitude);
+            magic = 1 - ee * magic * magic;
+            var sqrtMagic = Math.Sqrt(magic);
+            offsetLatitude = offsetLatitude * 180.0 / (a * (1 - ee) / (magic * sqrtMagic) * Math.PI);
+            offsetLongitude = offsetLongitude * 180.0 / (a / sqrtMagic * Math.Cos(radiusLatitude) * Math.PI);
+            return (longitude + offsetLongitude, latitude + offsetLatitude);
+        }
     }
 
     public class AsyncLazy<T>
diff --git a/Billing.Shared/Themes/BaseTheme.cs b/Billing.Shared/Themes/BaseTheme.cs
index e118f21..9dcd318 100644
--- a/Billing.Shared/Themes/BaseTheme.cs
+++ b/Billing.Shared/Themes/BaseTheme.cs
@@ -5,6 +5,8 @@ namespace Billing.Themes
 {
     public abstract class BaseTheme : ResourceDictionary
     {
+        public const double DefaultFontSize = 15.0;
+
         public static Color CurrentPrimaryColor => (Color)Application.Current.Resources[PrimaryColor];
         public static Color CurrentTextColor => (Color)Application.Current.Resources[TextColor];
         public static Color CurrentSecondaryTextColor => (Color)Application.Current.Resources[SecondaryTextColor];
@@ -42,7 +44,7 @@ namespace Billing.Themes
             {
                 Setters =
                 {
-                    new Setter { Property = Label.FontSizeProperty, Value = Device.GetNamedSize(NamedSize.Small, typeof(Label)) },
+                    new Setter { Property = Label.FontSizeProperty, Value = DefaultFontSize },
                     new Setter { Property = Label.TextColorProperty, Value = PrimaryMauiColor },
                     new Setter { Property = Label.FontFamilyProperty, Value = Definition.RegularFontFamily }
                 }
@@ -51,7 +53,7 @@ namespace Billing.Themes
             {
                 Setters =
                 {
-                    new Setter { Property = Entry.FontSizeProperty, Value = Device.GetNamedSize(NamedSize.Small, typeof(Entry)) },
+                    new Setter { Property = Entry.FontSizeProperty, Value = DefaultFontSize },
                     new Setter { Property = Entry.FontFamilyProperty, Value = Definition.RegularFontFamily }
                 }
             });
@@ -59,7 +61,7 @@ namespace Billing.Themes
             {
                 Setters =
                 {
-                    new Setter { Property = Editor.FontSizeProperty, Value = Device.GetNamedSize(NamedSize.Small, typeof(Editor)) },
+                    new Setter { Property = Editor.FontSizeProperty, Value = DefaultFontSize },
                     new Setter { Property = Editor.FontFamilyProperty, Value = Definition.RegularFontFamily }
                 }
             });
@@ -67,7 +69,7 @@ namespace Billing.Themes
             {
                 Setters =
                 {
-                    new Setter { Property = DatePicker.FontSizeProperty, Value = Device.GetNamedSize(NamedSize.Small, typeof(DatePicker)) },
+                    new Setter { Property = DatePicker.FontSizeProperty, Value = DefaultFontSize },
                     new Setter { Property = DatePicker.FontFamilyProperty, Value = Definition.RegularFontFamily }
                 }
             });
@@ -75,7 +77,7 @@ namespace Billing.Themes
             {
                 Setters =
                 {
-                    new Setter { Property = TimePicker.FontSizeProperty, Value = Device.GetNamedSize(NamedSize.Small, typeof(TimePicker)) },
+                    new Setter { Property = TimePicker.FontSizeProperty, Value = DefaultFontSize },
                     new Setter { Property = TimePicker.FontFamilyProperty, Value = Definition.RegularFontFamily }
                 }
             });
@@ -83,7 +85,7 @@ namespace Billing.Themes
             {
                 Setters =
                 {
-                    new Setter { Property = Picker.FontSizeProperty, Value = Device.GetNamedSize(NamedSize.Small, typeof(TimePicker)) },
+                    new Setter { Property = Picker.FontSizeProperty, Value = DefaultFontSize },
                     new Setter { Property = Picker.FontFamilyProperty, Value = Definition.RegularFontFamily }
                 }
             });
diff --git a/Billing.Shared/Views/AddBillPage.xaml.cs b/Billing.Shared/Views/AddBillPage.xaml.cs
index 2ae04be..2fcdaf7 100644
--- a/Billing.Shared/Views/AddBillPage.xaml.cs
+++ b/Billing.Shared/Views/AddBillPage.xaml.cs
@@ -16,13 +16,14 @@ namespace Billing.Views
     {
         private static readonly BindableProperty CheckBillProperty = Helper.Create<Command, AddBillPage>(nameof(CheckBill), defaultValue: new Command(() => { }, () => false));
         private static readonly BindableProperty AmountProperty = Helper.Create<string, AddBillPage>(nameof(Amount));
-        private static readonly BindableProperty NameProperty = Helper.Create<string, AddBillPage>(nameof(Name));
+        private static readonly BindableProperty NameProperty = Helper.Create<string, AddBillPage>(nameof(Name), defaultValue: string.Empty);
         private static readonly BindableProperty CategoryProperty = Helper.Create<Category, AddBillPage>(nameof(Category));
         private static readonly BindableProperty WalletProperty = Helper.Create<Account, AddBillPage>(nameof(Wallet));
         private static readonly BindableProperty StoreProperty = Helper.Create<string, AddBillPage>(nameof(Store));
         private static readonly BindableProperty CreatedDateProperty = Helper.Create<DateTime, AddBillPage>(nameof(CreatedDate));
         private static readonly BindableProperty CreatedTimeProperty = Helper.Create<TimeSpan, AddBillPage>(nameof(CreatedTime));
         private static readonly BindableProperty NoteProperty = Helper.Create<string, AddBillPage>(nameof(Note));
+        private static readonly BindableProperty ViewLocationProperty = Helper.Create<Command, AddBillPage>(nameof(ViewLocation), defaultValue: new Command(() => { }, () => false));
 
         public Command CheckBill => (Command)GetValue(CheckBillProperty);
         public string Amount
@@ -60,7 +61,7 @@ namespace Billing.Views
 
         public Command SelectCategory { get; }
         public Command SelectWallet { get; }
-        public Command ViewLocation { get; }
+        public Command ViewLocation => (Command)GetValue(ViewLocationProperty);
 
         public event EventHandler<Bill> BillChecked;
 
@@ -77,7 +78,6 @@ namespace Billing.Views
             createDate = date;
             SelectCategory = new Command(OnSelectCategory);
             SelectWallet = new Command(OnSelectWallet);
-            ViewLocation = new Command(() => { }, () => false);
             InitializeComponent();
             Title = Resource.AddBill;
 
@@ -89,10 +89,11 @@ namespace Billing.Views
             this.bill = bill;
             SelectCategory = new Command(OnSelectCategory);
             SelectWallet = new Command(OnSelectWallet);
-#if __ANDROID__
-            ViewLocation = new Command(() => { }, () => false);
-#else
-            ViewLocation = new Command(OnViewLocation, () => bill != null && bill.Latitude != null && bill.Longitude != null);
+#if __IOS__
+            if (bill != null && bill.Latitude != null && bill.Longitude != null)
+            {
+                SetValue(ViewLocationProperty, new Command(OnViewLocation));
+            }
 #endif
             InitializeComponent();
             Title = Resource.EditBill;
@@ -160,6 +161,12 @@ namespace Billing.Views
                     return;
                 }
                 location = await Geolocation.GetLocationAsync(request, tokenSource.Token);
+#if __IOS__
+                if (bill == null)
+                {
+                    SetValue(ViewLocationProperty, new Command(OnViewLocation));
+                }
+#endif
             }
             catch (FeatureNotSupportedException) { }
             catch (FeatureNotEnabledException) { }
@@ -170,7 +177,7 @@ namespace Billing.Views
             }
             finally
             {
-                SetValue(CheckBillProperty, new Command(OnCheckBill));
+                SetValue(CheckBillProperty, new Command(OnCheckBill));
             }
         }
 
@@ -292,7 +299,7 @@ namespace Billing.Views
 
         private async void OnViewLocation()
         {
-            if (bill == null)
+            if (bill == null && location == null)
             {
                 return;
             }
@@ -302,7 +309,13 @@ namespace Billing.Views
             }
             using (Tap.Start())
             {
-                var page = new ViewLocationPage(bill);
+                var page = new ViewLocationPage(bill ?? new Bill
+                {
+                    Name = Name,
+                    Store = Store,
+                    Longitude = location.Longitude,
+                    Latitude = location.Latitude
+                });
                 await Navigation.PushAsync(page);
             }
         }
diff --git a/Billing.Shared/Views/SettingPage.xaml b/Billing.Shared/Views/SettingPage.xaml
index 4aa525e..6a2c28e 100644
--- a/Billing.Shared/Views/SettingPage.xaml
+++ b/Billing.Shared/Views/SettingPage.xaml
@@ -17,18 +17,18 @@
 
     <TableView Intent="Settings" HasUnevenRows="True">
         <TableSection Title="{r:Text About}">
-            <ui:OptionTextCell Height="36" Title="{r:Text Version}"
+            <ui:OptionTextCell Height="44" Title="{r:Text Version}"
                                Detail="{Binding Version}"/>
         </TableSection>
         <TableSection Title="{r:Text Feature}">
-            <ui:OptionSelectCell Height="36" Title="{r:Text CategoryManage}"
+            <ui:OptionSelectCell Height="44" Title="{r:Text CategoryManage}"
                                  Detail="{r:Text Detail}"
                                  Command="{Binding CategoryCommand}"/>
-            <ui:OptionSwitchCell Height="36" Title="{r:Text SaveLocation}"
+            <ui:OptionSwitchCell Height="44" Title="{r:Text SaveLocation}"
                                  IsToggled="{Binding SaveLocation, Mode=TwoWay}"/>
         </TableSection>
         <TableSection Title="{r:Text Preference}">
-            <ui:OptionEntryCell Height="36" Title="{r:Text PrimaryColor}"
+            <ui:OptionEntryCell Height="44" Title="{r:Text PrimaryColor}"
                                 Text="{Binding PrimaryColor, Mode=TwoWay}"
                                 Keyboard="Text"/>
             <ViewCell Height="120">
@@ -42,7 +42,7 @@
             </ViewCell>
         </TableSection>
         <TableSection Title="{r:Text Diagnostic}">
-            <ui:OptionSelectCell Height="36" Title="{r:Text ShareLogs}"
+            <ui:OptionSelectCell Height="44" Title="{r:Text ShareLogs}"
                                  Detail="{Binding ManyRecords}"
                                  Command="{Binding ShareLogsCommand}"/>
         </TableSection>
diff --git a/Billing.Shared/Views/ViewLocationPage.cs b/Billing.Shared/Views/ViewLocationPage.cs
index edbded6..f1ef086 100644
--- a/Billing.Shared/Views/ViewLocationPage.cs
+++ b/Billing.Shared/Views/ViewLocationPage.cs
@@ -14,7 +14,8 @@ namespace Billing.Views
 
             if (bill.Latitude != null && bill.Longitude != null)
             {
-                var position = new Position(bill.Latitude.Value, bill.Longitude.Value);
+                var (longitude, latitude) = Helper.Wgs84ToGcj02(bill.Longitude.Value, bill.Latitude.Value);
+                var position = new Position(latitude, longitude);
                 var mapSpan = new MapSpan(position, 0.01, 0.01);
                 Content = new Map(mapSpan)
                 {
diff --git a/Billing/Billing.Android/Properties/AndroidManifest.xml b/Billing/Billing.Android/Properties/AndroidManifest.xml
index 09677bf..fdd0b61 100644
--- a/Billing/Billing.Android/Properties/AndroidManifest.xml
+++ b/Billing/Billing.Android/Properties/AndroidManifest.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionName="1.2.317" package="org.tsanie.billing" android:installLocation="auto" android:versionCode="17">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionName="1.2.318" package="org.tsanie.billing" android:installLocation="auto" android:versionCode="18">
 	<uses-sdk android:minSdkVersion="24" android:targetSdkVersion="30" />
 	<application android:label="@string/applabel" android:theme="@style/MainTheme" android:requestLegacyExternalStorage="true"></application>
 	<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
diff --git a/Billing/Billing.iOS/Info.plist b/Billing/Billing.iOS/Info.plist
index 8c17c86..4768c4e 100644
--- a/Billing/Billing.iOS/Info.plist
+++ b/Billing/Billing.iOS/Info.plist
@@ -80,9 +80,9 @@
 		</dict>
 	</array>
 	<key>CFBundleVersion</key>
-	<string>18</string>
+	<string>19</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.2.317</string>
+	<string>1.2.318</string>
 	<key>LSApplicationQueriesSchemes</key>
 	<array>
 		<string>mailto</string>